21621266231032 has 16 divisors (see below), whose sum is σ = 43658326043640. Its totient is φ = 9979045952736.

The previous prime is 21621266231023. The next prime is 21621266231041. The reversal of 21621266231032 is 23013266212612.

It is an interprime number because it is at equal distance from previous prime (21621266231023) and next prime (21621266231041).

It is a super-3 number, since 3×21621266231032³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21621266230982 and 21621266231000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103948395238 + ... + 103948395445.

Almost surely, 2^{21621266231032} is an apocalyptic number.

It is an amenable number.

21621266231032 is an abundant number, since it is smaller than the sum of its proper divisors (22037059812608).

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

21621266231032 is a wasteful number, since it uses less digits than its factorization.

21621266231032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207896790702 (or 207896790698 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The spelling of 21621266231032 in words is "twenty-one trillion, six hundred twenty-one billion, two hundred sixty-six million, two hundred thirty-one thousand, thirty-two".