121267979 has 8 divisors (see below), whose sum is σ = 138755328. Its totient is φ = 103821480.

The previous prime is 121267969. The next prime is 121267999. The reversal of 121267979 is 979762121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121267979 - 2⁴ = 121267963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121267969) 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, 3557 + ... + 15974.

It is an arithmetic number, because the mean of its divisors is an integer number (17344416).

Almost surely, 2^121267979 is an apocalyptic number.

121267979 is a deficient number, since it is larger than the sum of its proper divisors (17487349).

121267979 is an equidigital number, since it uses as much as digits as its factorization.

121267979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20425.

The product of its digits is 95256, while the sum is 44.

The square root of 121267979 is about 11012.1741268471. The cubic root of 121267979 is about 494.9736121702.

The spelling of 121267979 in words is "one hundred twenty-one million, two hundred sixty-seven thousand, nine hundred seventy-nine".