121556415604022 has 8 divisors (see below), whose sum is σ = 208382426749776. Its totient is φ = 52095606687432.

The previous prime is 121556415604021. The next prime is 121556415604033. The reversal of 121556415604022 is 220406514655121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121556415604021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4341300557273 + ... + 4341300557300.

It is an arithmetic number, because the mean of its divisors is an integer number (26047803343722).

Almost surely, 2^{121556415604022} is an apocalyptic number.

121556415604022 is a deficient number, since it is larger than the sum of its proper divisors (86826011145754).

121556415604022 is an equidigital number, since it uses as much as digits as its factorization.

121556415604022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8682601114582.

The product of its (nonzero) digits is 576000, while the sum is 44.

The spelling of 121556415604022 in words is "one hundred twenty-one trillion, five hundred fifty-six billion, four hundred fifteen million, six hundred four thousand, twenty-two".