125921211 has 16 divisors (see below), whose sum is σ = 182416416. Its totient is φ = 76801536.

The previous prime is 125921203. The next prime is 125921273. The reversal of 125921211 is 112129521.

It is not a de Polignac number, because 125921211 - 2³ = 125921203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125921611) 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, 9880 + ... + 18693.

It is an arithmetic number, because the mean of its divisors is an integer number (11401026).

Almost surely, 2^125921211 is an apocalyptic number.

125921211 is a deficient number, since it is larger than the sum of its proper divisors (56495205).

125921211 is a wasteful number, since it uses less digits than its factorization.

125921211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28702.

The product of its digits is 360, while the sum is 24.

The square root of 125921211 is about 11221.4620705147. The cubic root of 125921211 is about 501.2252762767.

The spelling of 125921211 in words is "one hundred twenty-five million, nine hundred twenty-one thousand, two hundred eleven".