21020122021232 has 40 divisors (see below), whose sum is σ = 41335131699216. Its totient is φ = 10352997236736.

The previous prime is 21020122021231. The next prime is 21020122021271. The reversal of 21020122021232 is 23212022102012.

It is a super-2 number, since 2×21020122021232² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020122021231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67592048 + ... + 67902320.

Almost surely, 2^{21020122021232} is an apocalyptic number.

It is an amenable number.

21020122021232 is a deficient number, since it is larger than the sum of its proper divisors (20315009677984).

21020122021232 is a wasteful number, since it uses less digits than its factorization.

21020122021232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373545 (or 373539 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21020122021232 its reverse (23212022102012), we get a palindrome (44232144123244).

The spelling of 21020122021232 in words is "twenty-one trillion, twenty billion, one hundred twenty-two million, twenty-one thousand, two hundred thirty-two".