2121011213333 has 8 divisors (see below), whose sum is σ = 2172823479960. Its totient is φ = 2069202769920.

The previous prime is 2121011213311. The next prime is 2121011213357. The reversal of 2121011213333 is 3333121101212.

It can be written as a sum of positive squares in 4 ways, for example, as 98409572209 + 2022601641124 = 313703^2 + 1422182^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2121011213333 - 2¹⁴ = 2121011196949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2121011213299 and 2121011213308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121011213833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183683 + ... + 2067791.

It is an arithmetic number, because the mean of its divisors is an integer number (271602934995).

Almost surely, 2^{2121011213333} is an apocalyptic number.

It is an amenable number.

2121011213333 is a deficient number, since it is larger than the sum of its proper divisors (51812266627).

2121011213333 is a wasteful number, since it uses less digits than its factorization.

2121011213333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911607.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 2121011213333 its reverse (3333121101212), we get a palindrome (5454132314545).

The spelling of 2121011213333 in words is "two trillion, one hundred twenty-one billion, eleven million, two hundred thirteen thousand, three hundred thirty-three".