21211202001022 has 32 divisors (see below), whose sum is σ = 36764628507360. Its totient is φ = 9070935982080.

The previous prime is 21211202000981. The next prime is 21211202001043. The reversal of 21211202001022 is 22010020211212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21211202000987 and 21211202001005.

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, 9539953 + ... + 11551324.

It is an arithmetic number, because the mean of its divisors is an integer number (1148894640855).

Almost surely, 2^{21211202001022} is an apocalyptic number.

21211202001022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21211202001022 is a deficient number, since it is larger than the sum of its proper divisors (15553426506338).

21211202001022 is a wasteful number, since it uses less digits than its factorization.

21211202001022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21093996.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21211202001022 its reverse (22010020211212), we get a palindrome (43221222212234).

The spelling of 21211202001022 in words is "twenty-one trillion, two hundred eleven billion, two hundred two million, one thousand, twenty-two".