21356260120232 has 16 divisors (see below), whose sum is σ = 40068061630260. Its totient is φ = 10671443685504.

The previous prime is 21356260120121. The next prime is 21356260120249. The reversal of 21356260120232 is 23202106265312.

It can be written as a sum of positive squares in 2 ways, for example, as 20295619664356 + 1060640455876 = 4505066^2 + 1029874^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21356260120192 and 21356260120201.

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, 835783253 + ... + 835808804.

Almost surely, 2^{21356260120232} is an apocalyptic number.

It is an amenable number.

21356260120232 is a deficient number, since it is larger than the sum of its proper divisors (18711801510028).

21356260120232 is a wasteful number, since it uses less digits than its factorization.

21356260120232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671593660 (or 1671593656 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 21356260120232 its reverse (23202106265312), we get a palindrome (44558366385544).

The spelling of 21356260120232 in words is "twenty-one trillion, three hundred fifty-six billion, two hundred sixty million, one hundred twenty thousand, two hundred thirty-two".