121399377 has 16 divisors (see below), whose sum is σ = 179219712. Its totient is φ = 72475920.

The previous prime is 121399367. The next prime is 121399387. The reversal of 121399377 is 773993121.

It is an interprime number because it is at equal distance from previous prime (121399367) and next prime (121399387).

It is not a de Polignac number, because 121399377 - 2¹¹ = 121397329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121399357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25243 + ... + 29664.

It is an arithmetic number, because the mean of its divisors is an integer number (11201232).

Almost surely, 2^121399377 is an apocalyptic number.

It is an amenable number.

121399377 is a deficient number, since it is larger than the sum of its proper divisors (57820335).

121399377 is a wasteful number, since it uses less digits than its factorization.

121399377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54988.

The product of its digits is 71442, while the sum is 42.

The square root of 121399377 is about 11018.1385451445. The cubic root of 121399377 is about 495.1523212486.

The spelling of 121399377 in words is "one hundred twenty-one million, three hundred ninety-nine thousand, three hundred seventy-seven".