121827789124 has 12 divisors (see below), whose sum is σ = 214303288444. Its totient is φ = 60598278144.

The previous prime is 121827789059. The next prime is 121827789203. The reversal of 121827789124 is 421987728121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30150849600 + 91676939524 = 173640^2 + 302782^2 .

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78903237 + ... + 78904780.

Almost surely, 2^121827789124 is an apocalyptic number.

It is an amenable number.

121827789124 is a deficient number, since it is larger than the sum of its proper divisors (92475499320).

121827789124 is a wasteful number, since it uses less digits than its factorization.

121827789124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157808214 (or 157808212 counting only the distinct ones).

The product of its digits is 903168, while the sum is 52.

The spelling of 121827789124 in words is "one hundred twenty-one billion, eight hundred twenty-seven million, seven hundred eighty-nine thousand, one hundred twenty-four".