212144431421125 has 32 divisors (see below), whose sum is σ = 302586677422848. Its totient is φ = 145466570376000.

The previous prime is 212144431421047. The next prime is 212144431421149. The reversal of 212144431421125 is 521124134441212.

It is not a de Polignac number, because 212144431421125 - 2²³ = 212144423032517 is a prime.

It is a super-5 number, since 5×212144431421125⁵ (a number of 73 digits) contains 55555 as substring.

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, 29624995 + ... + 36082255.

It is an arithmetic number, because the mean of its divisors is an integer number (9455833669464).

Almost surely, 2^{212144431421125} is an apocalyptic number.

212144431421125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212144431421125 is a deficient number, since it is larger than the sum of its proper divisors (90442246001723).

212144431421125 is an equidigital number, since it uses as much as digits as its factorization.

212144431421125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6494830 (or 6494820 counting only the distinct ones).

The product of its digits is 61440, while the sum is 37.

Adding to 212144431421125 its reverse (521124134441212), we get a palindrome (733268565862337).

The spelling of 212144431421125 in words is "two hundred twelve trillion, one hundred forty-four billion, four hundred thirty-one million, four hundred twenty-one thousand, one hundred twenty-five".