121149199660 has 12 divisors (see below), whose sum is σ = 254413319328. Its totient is φ = 48459679856.

The previous prime is 121149199657. The next prime is 121149199697. The reversal of 121149199660 is 66991941121.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3028729972 + ... + 3028730011.

It is an arithmetic number, because the mean of its divisors is an integer number (21201109944).

Almost surely, 2^121149199660 is an apocalyptic number.

121149199660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121149199660 is an abundant number, since it is smaller than the sum of its proper divisors (133264119668).

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

121149199660 is a wasteful number, since it uses less digits than its factorization.

121149199660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6057459992 (or 6057459990 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 49.

The spelling of 121149199660 in words is "one hundred twenty-one billion, one hundred forty-nine million, one hundred ninety-nine thousand, six hundred sixty".