21040341335125 has 96 divisors (see below), whose sum is σ = 31098675928320. Its totient is φ = 14168425891200.

The previous prime is 21040341335093. The next prime is 21040341335141. The reversal of 21040341335125 is 52153314304012.

It is not a de Polignac number, because 21040341335125 - 2⁵ = 21040341335093 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 84774711 + ... + 85022539.

It is an arithmetic number, because the mean of its divisors is an integer number (323944540920).

Almost surely, 2^{21040341335125} is an apocalyptic number.

21040341335125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21040341335125 is a deficient number, since it is larger than the sum of its proper divisors (10058334593195).

21040341335125 is a wasteful number, since it uses less digits than its factorization.

21040341335125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248108 (or 248091 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 21040341335125 its reverse (52153314304012), we get a palindrome (73193655639137).

The spelling of 21040341335125 in words is "twenty-one trillion, forty billion, three hundred forty-one million, three hundred thirty-five thousand, one hundred twenty-five".