21213545110232 has 16 divisors (see below), whose sum is σ = 39785883665640. Its totient is φ = 10603976132736.

The previous prime is 21213545110217. The next prime is 21213545110253. The reversal of 21213545110232 is 23201154531212.

It is a super-2 number, since 2×21213545110232² (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 3 ways as a sum of consecutive naturals, for example, 349520558 + ... + 349581245.

Almost surely, 2^{21213545110232} is an apocalyptic number.

It is an amenable number.

21213545110232 is a deficient number, since it is larger than the sum of its proper divisors (18572338555408).

21213545110232 is a wasteful number, since it uses less digits than its factorization.

21213545110232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699105602 (or 699105598 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 21213545110232 its reverse (23201154531212), we get a palindrome (44414699641444).

The spelling of 21213545110232 in words is "twenty-one trillion, two hundred thirteen billion, five hundred forty-five million, one hundred ten thousand, two hundred thirty-two".