21021020103032 has 32 divisors (see below), whose sum is σ = 43547381805600. Its totient is φ = 9462147154944.

The previous prime is 21021020103019. The next prime is 21021020103043. The reversal of 21021020103032 is 23030102012012.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 21021020103032.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3360134357 + ... + 3360140612.

It is an arithmetic number, because the mean of its divisors is an integer number (1360855681425).

Almost surely, 2^{21021020103032} is an apocalyptic number.

It is an amenable number.

21021020103032 is an abundant number, since it is smaller than the sum of its proper divisors (22526361702568).

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

21021020103032 is a wasteful number, since it uses less digits than its factorization.

21021020103032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6720275015 (or 6720275011 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21021020103032 its reverse (23030102012012), we get a palindrome (44051122115044).

The spelling of 21021020103032 in words is "twenty-one trillion, twenty-one billion, twenty million, one hundred three thousand, thirty-two".