125796996221 has 16 divisors (see below), whose sum is σ = 136372454400. Its totient is φ = 115350326208.

The previous prime is 125796996173. The next prime is 125796996277. The reversal of 125796996221 is 122699697521.

It is a de Polignac number, because none of the positive numbers 2^k-125796996221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125796995221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12402170 + ... + 12412308.

It is an arithmetic number, because the mean of its divisors is an integer number (8523278400).

Almost surely, 2^125796996221 is an apocalyptic number.

It is an amenable number.

125796996221 is a deficient number, since it is larger than the sum of its proper divisors (10575458179).

125796996221 is a wasteful number, since it uses less digits than its factorization.

125796996221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16388.

The product of its digits is 7348320, while the sum is 59.

The spelling of 125796996221 in words is "one hundred twenty-five billion, seven hundred ninety-six million, nine hundred ninety-six thousand, two hundred twenty-one".