212021101313 has 16 divisors (see below), whose sum is σ = 256588807680. Its totient is φ = 171025261056.

The previous prime is 212021101219. The next prime is 212021101363. The reversal of 212021101313 is 313101120212.

It is a cyclic number.

It is not a de Polignac number, because 212021101313 - 2²⁰ = 212020052737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212021101291 and 212021101300.

It is not an unprimeable number, because it can be changed into a prime (212021101363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1193720 + ... + 1359782.

It is an arithmetic number, because the mean of its divisors is an integer number (16036800480).

Almost surely, 2^212021101313 is an apocalyptic number.

It is an amenable number.

212021101313 is a deficient number, since it is larger than the sum of its proper divisors (44567706367).

212021101313 is a wasteful number, since it uses less digits than its factorization.

212021101313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176816.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 212021101313 its reverse (313101120212), we get a palindrome (525122221525).

The spelling of 212021101313 in words is "two hundred twelve billion, twenty-one million, one hundred one thousand, three hundred thirteen".