21232211231052 has 18 divisors (see below), whose sum is σ = 53670311723028. Its totient is φ = 7077403743672.

The previous prime is 21232211231047. The next prime is 21232211231083. The reversal of 21232211231052 is 25013211223212.

21232211231052 is a `hidden beast` number, since 2 + 1 + 232 + 2 + 112 + 310 + 5 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 294891822618 + ... + 294891822689.

Almost surely, 2^{21232211231052} is an apocalyptic number.

It is an amenable number.

21232211231052 is an abundant number, since it is smaller than the sum of its proper divisors (32438100491976).

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

21232211231052 is a wasteful number, since it uses less digits than its factorization.

21232211231052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589783645317 (or 589783645312 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 21232211231052 its reverse (25013211223212), we get a palindrome (46245422454264).

The spelling of 21232211231052 in words is "twenty-one trillion, two hundred thirty-two billion, two hundred eleven million, two hundred thirty-one thousand, fifty-two".