21003231102 has 32 divisors (see below), whose sum is σ = 48014208000. Its totient is φ = 6000070368.

The previous prime is 21003231097. The next prime is 21003231107. The reversal of 21003231102 is 20113230012.

It is an interprime number because it is at equal distance from previous prime (21003231097) and next prime (21003231107).

It is a super-2 number, since 2×21003231102² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21003231107) 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, 301024 + ... + 364172.

It is an arithmetic number, because the mean of its divisors is an integer number (1500444000).

Almost surely, 2^21003231102 is an apocalyptic number.

21003231102 is an abundant number, since it is smaller than the sum of its proper divisors (27010976898).

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

21003231102 is a wasteful number, since it uses less digits than its factorization.

21003231102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71080.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21003231102 its reverse (20113230012), we get a palindrome (41116461114).

The spelling of 21003231102 in words is "twenty-one billion, three million, two hundred thirty-one thousand, one hundred two".