121681860300 has 864 divisors, whose sum is σ = 528736825344. Its totient is φ = 22581504000.

The previous prime is 121681860283. The next prime is 121681860317. The reversal of 121681860300 is 3068186121.

121681860300 is a `hidden beast` number, since 1 + 216 + 81 + 8 + 60 + 300 = 666.

It is an interprime number because it is at equal distance from previous prime (121681860283) and next prime (121681860317).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 27925722 + ... + 27930078.

Almost surely, 2^121681860300 is an apocalyptic number.

121681860300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121681860300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264368412672).

121681860300 is an abundant number, since it is smaller than the sum of its proper divisors (407054965044).

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

121681860300 is a wasteful number, since it uses less digits than its factorization.

121681860300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4439 (or 4429 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The spelling of 121681860300 in words is "one hundred twenty-one billion, six hundred eighty-one million, eight hundred sixty thousand, three hundred".