121015860680 has 384 divisors, whose sum is σ = 356181235200. Its totient is φ = 36561592320.

The previous prime is 121015860661. The next prime is 121015860689. The reversal of 121015860680 is 86068510121.

It is a super-2 number, since 2×121015860680² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121015860689) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 24599261 + ... + 24604179.

It is an arithmetic number, because the mean of its divisors is an integer number (927555300).

Almost surely, 2^121015860680 is an apocalyptic number.

121015860680 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 121015860680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178090617600).

121015860680 is an abundant number, since it is smaller than the sum of its proper divisors (235165374520).

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

121015860680 is a wasteful number, since it uses less digits than its factorization.

121015860680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5005 (or 4990 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 38.

The spelling of 121015860680 in words is "one hundred twenty-one billion, fifteen million, eight hundred sixty thousand, six hundred eighty".