125322021 has 24 divisors (see below), whose sum is σ = 204291360. Its totient is φ = 73332000.

The previous prime is 125322019. The next prime is 125322037. The reversal of 125322021 is 120223521.

It is not a de Polignac number, because 125322021 - 2¹ = 125322019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125321985 and 125322003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125322091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18955 + ... + 24696.

It is an arithmetic number, because the mean of its divisors is an integer number (8512140).

Almost surely, 2^125322021 is an apocalyptic number.

125322021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125322021 is a deficient number, since it is larger than the sum of its proper divisors (78969339).

125322021 is a wasteful number, since it uses less digits than its factorization.

125322021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43697 (or 43694 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 125322021 is about 11194.7318413618. The cubic root of 125322021 is about 500.4289931578.

Adding to 125322021 its reverse (120223521), we get a palindrome (245545542).

The spelling of 125322021 in words is "one hundred twenty-five million, three hundred twenty-two thousand, twenty-one".