21230132011320 has 64 divisors (see below), whose sum is σ = 64640998984320. Its totient is φ = 5576870496384.

The previous prime is 21230132011307. The next prime is 21230132011337. The reversal of 21230132011320 is 2311023103212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1320273802 + ... + 1320289881.

It is an arithmetic number, because the mean of its divisors is an integer number (1010015609130).

Almost surely, 2^{21230132011320} is an apocalyptic number.

21230132011320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21230132011320 is an abundant number, since it is smaller than the sum of its proper divisors (43410866973000).

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

21230132011320 is a wasteful number, since it uses less digits than its factorization.

21230132011320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2640563764 (or 2640563760 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21230132011320 its reverse (2311023103212), we get a palindrome (23541155114532).

The spelling of 21230132011320 in words is "twenty-one trillion, two hundred thirty billion, one hundred thirty-two million, eleven thousand, three hundred twenty".