121548220770 has 32 divisors (see below), whose sum is σ = 292443229440. Its totient is φ = 32332025600.

The previous prime is 121548220769. The next prime is 121548220793. The reversal of 121548220770 is 77022845121.

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, 5039850 + ... + 5063909.

It is an arithmetic number, because the mean of its divisors is an integer number (9138850920).

Almost surely, 2^121548220770 is an apocalyptic number.

121548220770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121548220770 is an abundant number, since it is smaller than the sum of its proper divisors (170895008670).

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

121548220770 is a wasteful number, since it uses less digits than its factorization.

121548220770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10104170.

The product of its (nonzero) digits is 62720, while the sum is 39.

The spelling of 121548220770 in words is "one hundred twenty-one billion, five hundred forty-eight million, two hundred twenty thousand, seven hundred seventy".