20213145552232 has 16 divisors (see below), whose sum is σ = 40129038964260. Its totient is φ = 9512068495104.

The previous prime is 20213145552191. The next prime is 20213145552253. The reversal of 20213145552232 is 23225554131202.

It can be written as a sum of positive squares in 2 ways, for example, as 17344342939716 + 2868802612516 = 4164654^2 + 1693754^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20213145552191 and 20213145552200.

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, 74313034983 + ... + 74313035254.

Almost surely, 2^{20213145552232} is an apocalyptic number.

It is an amenable number.

20213145552232 is a deficient number, since it is larger than the sum of its proper divisors (19915893412028).

20213145552232 is a wasteful number, since it uses less digits than its factorization.

20213145552232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148626070260 (or 148626070256 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 20213145552232 its reverse (23225554131202), we get a palindrome (43438699683434).

The spelling of 20213145552232 in words is "twenty trillion, two hundred thirteen billion, one hundred forty-five million, five hundred fifty-two thousand, two hundred thirty-two".