121507607 has 4 divisors (see below), whose sum is σ = 130854360. Its totient is φ = 112160856.

The previous prime is 121507591. The next prime is 121507613. The reversal of 121507607 is 706705121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 706705121 = 18307 ⋅38603.

It is a cyclic number.

It is not a de Polignac number, because 121507607 - 2⁴ = 121507591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121507607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121507627) 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, 4673357 + ... + 4673382.

It is an arithmetic number, because the mean of its divisors is an integer number (32713590).

Almost surely, 2^121507607 is an apocalyptic number.

121507607 is a deficient number, since it is larger than the sum of its proper divisors (9346753).

121507607 is an equidigital number, since it uses as much as digits as its factorization.

121507607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9346752.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 121507607 is about 11023.0488976508. The cubic root of 121507607 is about 495.2994236455.

The spelling of 121507607 in words is "one hundred twenty-one million, five hundred seven thousand, six hundred seven".