21102200120022 has 32 divisors (see below), whose sum is σ = 48286546136064. Its totient is φ = 6022581801600.

The previous prime is 21102200120011. The next prime is 21102200120081. The reversal of 21102200120022 is 22002100220112.

It is a super-2 number, since 2×21102200120022² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21102200119983 and 21102200120010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275720979 + ... + 275797502.

It is an arithmetic number, because the mean of its divisors is an integer number (1508954566752).

Almost surely, 2^{21102200120022} is an apocalyptic number.

21102200120022 is an abundant number, since it is smaller than the sum of its proper divisors (27184346016042).

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

21102200120022 is a wasteful number, since it uses less digits than its factorization.

21102200120022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551519404.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21102200120022 its reverse (22002100220112), we get a palindrome (43104300340134).

The spelling of 21102200120022 in words is "twenty-one trillion, one hundred two billion, two hundred million, one hundred twenty thousand, twenty-two".