121994607 has 16 divisors (see below), whose sum is σ = 188445440. Its totient is φ = 68755392.

The previous prime is 121994591. The next prime is 121994623. The reversal of 121994607 is 706499121.

It is an interprime number because it is at equal distance from previous prime (121994591) and next prime (121994623).

It is not a de Polignac number, because 121994607 - 2⁴ = 121994591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121994627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38257 + ... + 41322.

It is an arithmetic number, because the mean of its divisors is an integer number (11777840).

Almost surely, 2^121994607 is an apocalyptic number.

121994607 is a deficient number, since it is larger than the sum of its proper divisors (66450833).

121994607 is an equidigital number, since it uses as much as digits as its factorization.

121994607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79662.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 121994607 is about 11045.1168848501. The cubic root of 121994607 is about 495.9602582080.

The spelling of 121994607 in words is "one hundred twenty-one million, nine hundred ninety-four thousand, six hundred seven".