21352104132 has 12 divisors (see below), whose sum is σ = 49821576336. Its totient is φ = 7117368040.

The previous prime is 21352104101. The next prime is 21352104197. The reversal of 21352104132 is 23140125312.

It is a tau number, because it is divible by the number of its divisors (12).

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, 889670994 + ... + 889671017.

It is an arithmetic number, because the mean of its divisors is an integer number (4151798028).

Almost surely, 2^21352104132 is an apocalyptic number.

It is an amenable number.

21352104132 is an abundant number, since it is smaller than the sum of its proper divisors (28469472204).

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

21352104132 is a wasteful number, since it uses less digits than its factorization.

21352104132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779342018 (or 1779342016 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 21352104132 its reverse (23140125312), we get a palindrome (44492229444).

The spelling of 21352104132 in words is "twenty-one billion, three hundred fifty-two million, one hundred four thousand, one hundred thirty-two".