121570750660 has 48 divisors (see below), whose sum is σ = 261568403712. Its totient is φ = 47434438400.

The previous prime is 121570750657. The next prime is 121570750669. The reversal of 121570750660 is 66057075121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121570750669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9409605 + ... + 9422515.

It is an arithmetic number, because the mean of its divisors is an integer number (5449341744).

Almost surely, 2^121570750660 is an apocalyptic number.

121570750660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121570750660 is an abundant number, since it is smaller than the sum of its proper divisors (139997653052).

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

121570750660 is a wasteful number, since it uses less digits than its factorization.

121570750660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24444 (or 24442 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 40.

The spelling of 121570750660 in words is "one hundred twenty-one billion, five hundred seventy million, seven hundred fifty thousand, six hundred sixty".