21102122202022 has 48 divisors (see below), whose sum is σ = 32810799333312. Its totient is φ = 10173162893040.

The previous prime is 21102122202019. The next prime is 21102122202041. The reversal of 21102122202022 is 22020222120112.

It is a super-2 number, since 2×21102122202022² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 278607897 + ... + 278683627.

It is an arithmetic number, because the mean of its divisors is an integer number (683558319444).

Almost surely, 2^{21102122202022} is an apocalyptic number.

21102122202022 is a deficient number, since it is larger than the sum of its proper divisors (11708677131290).

21102122202022 is a wasteful number, since it uses less digits than its factorization.

21102122202022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76273 (or 76166 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21102122202022 its reverse (22020222120112), we get a palindrome (43122344322134).

The spelling of 21102122202022 in words is "twenty-one trillion, one hundred two billion, one hundred twenty-two million, two hundred two thousand, twenty-two".