21030213001125 has 32 divisors (see below), whose sum is σ = 35023906225152. Its totient is φ = 11206616232000.

The previous prime is 21030213001013. The next prime is 21030213001139. The reversal of 21030213001125 is 52110031203012.

It is not a de Polignac number, because 21030213001125 - 2⁷ = 21030213000997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23299957 + ... + 24185706.

It is an arithmetic number, because the mean of its divisors is an integer number (1094497069536).

Almost surely, 2^{21030213001125} is an apocalyptic number.

21030213001125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21030213001125 is a deficient number, since it is larger than the sum of its proper divisors (13993693224027).

21030213001125 is a wasteful number, since it uses less digits than its factorization.

21030213001125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47486862 (or 47486852 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 21030213001125 its reverse (52110031203012), we get a palindrome (73140244204137).

The spelling of 21030213001125 in words is "twenty-one trillion, thirty billion, two hundred thirteen million, one thousand, one hundred twenty-five".