121580085400 has 24 divisors (see below), whose sum is σ = 282673699020. Its totient is φ = 48632034080.

The previous prime is 121580085391. The next prime is 121580085413. The reversal of 121580085400 is 4580085121.

It is a super-3 number, since 3×121580085400³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 303950014 + ... + 303950413.

Almost surely, 2^121580085400 is an apocalyptic number.

121580085400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121580085400 is an abundant number, since it is smaller than the sum of its proper divisors (161093613620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121580085400 is a wasteful number, since it uses less digits than its factorization.

121580085400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607900443 (or 607900434 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 34.

The spelling of 121580085400 in words is "one hundred twenty-one billion, five hundred eighty million, eighty-five thousand, four hundred".