121306372 has 36 divisors (see below), whose sum is σ = 239069628. Its totient is φ = 53785600.

The previous prime is 121306349. The next prime is 121306399. The reversal of 121306372 is 273603121.

It can be written as a sum of positive squares in 2 ways, for example, as 30980356 + 90326016 = 5566^2 + 9504^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16788 + ... + 22900.

It is an arithmetic number, because the mean of its divisors is an integer number (6640823).

Almost surely, 2^121306372 is an apocalyptic number.

It is an amenable number.

121306372 is a deficient number, since it is larger than the sum of its proper divisors (117763256).

121306372 is a wasteful number, since it uses less digits than its factorization.

121306372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6180 (or 6167 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 121306372 is about 11013.9171959844. The cubic root of 121306372 is about 495.0258422722.

Adding to 121306372 its reverse (273603121), we get a palindrome (394909493).

The spelling of 121306372 in words is "one hundred twenty-one million, three hundred six thousand, three hundred seventy-two".