21310014132 has 144 divisors (see below), whose sum is σ = 61412262912. Its totient is φ = 6172971840.

The previous prime is 21310014127. The next prime is 21310014137. The reversal of 21310014132 is 23141001312.

It is an interprime number because it is at equal distance from previous prime (21310014127) and next prime (21310014137).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21310014137) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 787003 + ... + 813629.

It is an arithmetic number, because the mean of its divisors is an integer number (426474048).

Almost surely, 2^21310014132 is an apocalyptic number.

21310014132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21310014132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30706131456).

21310014132 is an abundant number, since it is smaller than the sum of its proper divisors (40102248780).

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

21310014132 is a wasteful number, since it uses less digits than its factorization.

21310014132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26738 (or 26733 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21310014132 its reverse (23141001312), we get a palindrome (44451015444).

The spelling of 21310014132 in words is "twenty-one billion, three hundred ten million, fourteen thousand, one hundred thirty-two".