121858398932 has 12 divisors (see below), whose sum is σ = 213424601460. Its totient is φ = 60879941376.

The previous prime is 121858398913. The next prime is 121858398947. The reversal of 121858398932 is 239893858121.

It can be written as a sum of positive squares in 2 ways, for example, as 97116996496 + 24741402436 = 311636^2 + 157294^2 .

It is a congruent number.

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, 12308957 + ... + 12318852.

It is an arithmetic number, because the mean of its divisors is an integer number (17785383455).

Almost surely, 2^121858398932 is an apocalyptic number.

It is an amenable number.

121858398932 is a deficient number, since it is larger than the sum of its proper divisors (91566202528).

121858398932 is a wasteful number, since it uses less digits than its factorization.

121858398932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24629050 (or 24629048 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 59.

The spelling of 121858398932 in words is "one hundred twenty-one billion, eight hundred fifty-eight million, three hundred ninety-eight thousand, nine hundred thirty-two".