121372312 has 8 divisors (see below), whose sum is σ = 227573100. Its totient is φ = 60686152.

The previous prime is 121372301. The next prime is 121372313. The reversal of 121372312 is 213273121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121372313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7585762 + ... + 7585777.

Almost surely, 2^121372312 is an apocalyptic number.

It is an amenable number.

121372312 is a deficient number, since it is larger than the sum of its proper divisors (106200788).

121372312 is a wasteful number, since it uses less digits than its factorization.

121372312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15171545 (or 15171541 counting only the distinct ones).

The product of its digits is 504, while the sum is 22.

The square root of 121372312 is about 11016.9102746641. The cubic root of 121372312 is about 495.1155217913.

The spelling of 121372312 in words is "one hundred twenty-one million, three hundred seventy-two thousand, three hundred twelve".