125631221132 has 12 divisors (see below), whose sum is σ = 220191325536. Its totient is φ = 62719413840.

The previous prime is 125631221123. The next prime is 125631221159. The reversal of 125631221132 is 231122136521.

It is a super-2 number, since 2×125631221132² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125631221095 and 125631221104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24046244 + ... + 24051467.

It is an arithmetic number, because the mean of its divisors is an integer number (18349277128).

Almost surely, 2^125631221132 is an apocalyptic number.

It is an amenable number.

125631221132 is a deficient number, since it is larger than the sum of its proper divisors (94560104404).

125631221132 is a wasteful number, since it uses less digits than its factorization.

125631221132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48098368 (or 48098366 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

Adding to 125631221132 its reverse (231122136521), we get a palindrome (356753357653).

The spelling of 125631221132 in words is "one hundred twenty-five billion, six hundred thirty-one million, two hundred twenty-one thousand, one hundred thirty-two".