21010122202113 has 24 divisors (see below), whose sum is σ = 33111978007680. Its totient is φ = 12731438633760.

The previous prime is 21010122202109. The next prime is 21010122202229. The reversal of 21010122202113 is 31120222101012.

21010122202113 is a `hidden beast` number, since 210 + 10 + 12 + 220 + 211 + 3 = 666.

It is not a de Polignac number, because 21010122202113 - 2² = 21010122202109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21010122202513) 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 23 ways as a sum of consecutive naturals, for example, 15762681 + ... + 17043542.

It is an arithmetic number, because the mean of its divisors is an integer number (1379665750320).

Almost surely, 2^{21010122202113} is an apocalyptic number.

It is an amenable number.

21010122202113 is a deficient number, since it is larger than the sum of its proper divisors (12101855805567).

21010122202113 is a wasteful number, since it uses less digits than its factorization.

21010122202113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32812709 (or 32812706 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 21010122202113 its reverse (31120222101012), we get a palindrome (52130344303125).

The spelling of 21010122202113 in words is "twenty-one trillion, ten billion, one hundred twenty-two million, two hundred two thousand, one hundred thirteen".