21102021011022 has 16 divisors (see below), whose sum is σ = 48233190882432. Its totient is φ = 6029148860280.

The previous prime is 21102021010981. The next prime is 21102021011069. The reversal of 21102021011022 is 22011012020112.

It is a super-2 number, since 2×21102021011022² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21102021010992 and 21102021011010.

It is a congruent number.

It is an unprimeable number.

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, 251214535804 + ... + 251214535887.

It is an arithmetic number, because the mean of its divisors is an integer number (3014574430152).

Almost surely, 2^{21102021011022} is an apocalyptic number.

21102021011022 is an abundant number, since it is smaller than the sum of its proper divisors (27131169871410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21102021011022 is a wasteful number, since it uses less digits than its factorization.

21102021011022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502429071703.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21102021011022 its reverse (22011012020112), we get a palindrome (43113033031134).

The spelling of 21102021011022 in words is "twenty-one trillion, one hundred two billion, twenty-one million, eleven thousand, twenty-two".