121132979 has 8 divisors (see below), whose sum is σ = 133238640. Its totient is φ = 110119680.

The previous prime is 121132969. The next prime is 121132987. The reversal of 121132979 is 979231121.

It is a de Polignac number, because none of the positive numbers 2^k-121132979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121132909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44174 + ... + 46835.

It is an arithmetic number, because the mean of its divisors is an integer number (16654830).

Almost surely, 2^121132979 is an apocalyptic number.

121132979 is a deficient number, since it is larger than the sum of its proper divisors (12105661).

121132979 is an frugal number, since it uses more digits than its factorization.

121132979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91042 (or 91020 counting only the distinct ones).

The product of its digits is 6804, while the sum is 35.

The square root of 121132979 is about 11006.0428401856. The cubic root of 121132979 is about 494.7898696588.

The spelling of 121132979 in words is "one hundred twenty-one million, one hundred thirty-two thousand, nine hundred seventy-nine".