72125312213122 has 16 divisors (see below), whose sum is σ = 123773133618432. Its totient is φ = 30878412778080.

The previous prime is 72125312213069. The next prime is 72125312213147. The reversal of 72125312213122 is 22131221352127.

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, 2702928954 + ... + 2702955637.

It is an arithmetic number, because the mean of its divisors is an integer number (7735820851152).

Almost surely, 2^{72125312213122} is an apocalyptic number.

72125312213122 is a deficient number, since it is larger than the sum of its proper divisors (51647821405310).

72125312213122 is a wasteful number, since it uses less digits than its factorization.

72125312213122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5405885553.

The product of its digits is 20160, while the sum is 34.

Adding to 72125312213122 its reverse (22131221352127), we get a palindrome (94256533565249).

The spelling of 72125312213122 in words is "seventy-two trillion, one hundred twenty-five billion, three hundred twelve million, two hundred thirteen thousand, one hundred twenty-two".