121806312000 has 112 divisors (see below), whose sum is σ = 402204521472. Its totient is φ = 32481676800.

The previous prime is 121806311987. The next prime is 121806312011. The reversal of 121806312000 is 213608121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2513632 + ... + 2561631.

Almost surely, 2^121806312000 is an apocalyptic number.

121806312000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121806312000 is an abundant number, since it is smaller than the sum of its proper divisors (280398209472).

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

121806312000 is an equidigital number, since it uses as much as digits as its factorization.

121806312000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5075293 (or 5075273 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The spelling of 121806312000 in words is "one hundred twenty-one billion, eight hundred six million, three hundred twelve thousand".