121137712 has 20 divisors (see below), whose sum is σ = 235319760. Its totient is φ = 60410048.

The previous prime is 121137703. The next prime is 121137719. The reversal of 121137712 is 217731121.

It is not an unprimeable number, because it can be changed into a prime (121137719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3508 + ... + 15955.

It is an arithmetic number, because the mean of its divisors is an integer number (11765988).

Almost surely, 2^121137712 is an apocalyptic number.

It is an amenable number.

121137712 is a deficient number, since it is larger than the sum of its proper divisors (114182048).

121137712 is a wasteful number, since it uses less digits than its factorization.

121137712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19860 (or 19854 counting only the distinct ones).

The product of its digits is 588, while the sum is 25.

The square root of 121137712 is about 11006.2578563288. The cubic root of 121137712 is about 494.7963138438.

Adding to 121137712 its reverse (217731121), we get a palindrome (338868833).

The spelling of 121137712 in words is "one hundred twenty-one million, one hundred thirty-seven thousand, seven hundred twelve".