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213121203333331 = 1425471495094273
BaseRepresentation
bin110000011101010100100101…
…100111100110100011010011
31000221121012002002120212100111
4300131110211213212203103
5210413234211023131311
62033134310150102151
762614333044402106
oct6035244547464323
91027535062525314
10213121203333331
11619a8216250317
121baa039794a957
1391bc3215220c7
143a8b19ab0c73d
151998b89174d21
hexc1d5259e68d3

213121203333331 has 4 divisors (see below), whose sum is σ = 213122698570152. Its totient is φ = 213119708096512.

The previous prime is 213121203333301. The next prime is 213121203333377. The reversal of 213121203333331 is 133333302121312.

It is a happy number.

213121203333331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213121203333331 - 231 = 213119055849683 is a prime.

It is a super-2 number, since 2×2131212033333312 (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213121203333293 and 213121203333302.

It is not an unprimeable number, because it can be changed into a prime (213121203333301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 747404590 + ... + 747689683.

It is an arithmetic number, because the mean of its divisors is an integer number (53280674642538).

Almost surely, 2213121203333331 is an apocalyptic number.

213121203333331 is a deficient number, since it is larger than the sum of its proper divisors (1495236821).

213121203333331 is a wasteful number, since it uses less digits than its factorization.

213121203333331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495236820.

The product of its (nonzero) digits is 17496, while the sum is 31.

Adding to 213121203333331 its reverse (133333302121312), we get a palindrome (346454505454643).

The spelling of 213121203333331 in words is "two hundred thirteen trillion, one hundred twenty-one billion, two hundred three million, three hundred thirty-three thousand, three hundred thirty-one".

Divisors: 1 142547 1495094273 213121203333331