21102210132 has 48 divisors (see below), whose sum is σ = 50530640832. Its totient is φ = 6850097920.

The previous prime is 21102210113. The next prime is 21102210137. The reversal of 21102210132 is 23101220112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102210137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235543 + ... + 312545.

It is an arithmetic number, because the mean of its divisors is an integer number (1052721684).

Almost surely, 2^21102210132 is an apocalyptic number.

It is an amenable number.

21102210132 is an abundant number, since it is smaller than the sum of its proper divisors (29428430700).

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

21102210132 is a wasteful number, since it uses less digits than its factorization.

21102210132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77608 (or 77606 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21102210132 its reverse (23101220112), we get a palindrome (44203430244).

The spelling of 21102210132 in words is "twenty-one billion, one hundred two million, two hundred ten thousand, one hundred thirty-two".