121307970 has 64 divisors (see below), whose sum is σ = 350254080. Its totient is φ = 26267328.

The previous prime is 121307959. The next prime is 121307983. The reversal of 121307970 is 79703121.

It is a super-3 number, since 3×121307970³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11212 + ... + 19191.

It is an arithmetic number, because the mean of its divisors is an integer number (5472720).

Almost surely, 2^121307970 is an apocalyptic number.

121307970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121307970 is an abundant number, since it is smaller than the sum of its proper divisors (228946110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121307970 is a wasteful number, since it uses less digits than its factorization.

121307970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30439.

The product of its (nonzero) digits is 2646, while the sum is 30.

The square root of 121307970 is about 11013.9897403257. The cubic root of 121307970 is about 495.0280159636.

It can be divided in two parts, 12130 and 7970, that added together give a triangular number (20100 = T₂₀₀).

The spelling of 121307970 in words is "one hundred twenty-one million, three hundred seven thousand, nine hundred seventy".