21102814332 has 60 divisors (see below), whose sum is σ = 56449914136. Its totient is φ = 6870679200.

The previous prime is 21102814277. The next prime is 21102814333. The reversal of 21102814332 is 23341820112.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21102814296 and 21102814305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102814333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 743419 + ... + 771282.

Almost surely, 2^21102814332 is an apocalyptic number.

It is an amenable number.

21102814332 is an abundant number, since it is smaller than the sum of its proper divisors (35347099804).

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

21102814332 is a wasteful number, since it uses less digits than its factorization.

21102814332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514760 (or 1514749 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The spelling of 21102814332 in words is "twenty-one billion, one hundred two million, eight hundred fourteen thousand, three hundred thirty-two".