121019943 has 16 divisors (see below), whose sum is σ = 176242176. Its totient is φ = 73256640.

The previous prime is 121019903. The next prime is 121019959. The reversal of 121019943 is 349910121.

It is not a de Polignac number, because 121019943 - 2⁸ = 121019687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121019943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121019903) 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, 34530 + ... + 37872.

It is an arithmetic number, because the mean of its divisors is an integer number (11015136).

Almost surely, 2^121019943 is an apocalyptic number.

121019943 is a deficient number, since it is larger than the sum of its proper divisors (55222233).

121019943 is a wasteful number, since it uses less digits than its factorization.

121019943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4454.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 121019943 is about 11000.9064626512. The cubic root of 121019943 is about 494.6359163368.

The spelling of 121019943 in words is "one hundred twenty-one million, nineteen thousand, nine hundred forty-three".