21003122221032 has 48 divisors (see below), whose sum is σ = 61080508503360. Its totient is φ = 6000892062816.

The previous prime is 21003122221027. The next prime is 21003122221051. The reversal of 21003122221032 is 23012222130012.

It is a super-2 number, since 2×21003122221032² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8929897728 + ... + 8929900079.

It is an arithmetic number, because the mean of its divisors is an integer number (1272510593820).

Almost surely, 2^{21003122221032} is an apocalyptic number.

It is an amenable number.

21003122221032 is an abundant number, since it is smaller than the sum of its proper divisors (40077386282328).

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

21003122221032 is a wasteful number, since it uses less digits than its factorization.

21003122221032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17859797830 (or 17859797819 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21003122221032 its reverse (23012222130012), we get a palindrome (44015344351044).

The spelling of 21003122221032 in words is "twenty-one trillion, three billion, one hundred twenty-two million, two hundred twenty-one thousand, thirty-two".