100134725021 has 4 divisors (see below), whose sum is σ = 101126158044. Its totient is φ = 99143292000.

The previous prime is 100134724999. The next prime is 100134725029. The reversal of 100134725021 is 120527431001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 98175688900 + 1959036121 = 313330^2 + 44261^2 .

It is a cyclic number.

It is not a de Polignac number, because 100134725021 - 2²⁶ = 100067616157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100134725029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 495716360 + ... + 495716561.

It is an arithmetic number, because the mean of its divisors is an integer number (25281539511).

Almost surely, 2^100134725021 is an apocalyptic number.

It is an amenable number.

100134725021 is a deficient number, since it is larger than the sum of its proper divisors (991433023).

100134725021 is an equidigital number, since it uses as much as digits as its factorization.

100134725021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991433022.

The product of its (nonzero) digits is 1680, while the sum is 26.

The spelling of 100134725021 in words is "one hundred billion, one hundred thirty-four million, seven hundred twenty-five thousand, twenty-one".