121379845870 has 16 divisors (see below), whose sum is σ = 218815272720. Its totient is φ = 48478260544.

The previous prime is 121379845843. The next prime is 121379845871. The reversal of 121379845870 is 78548973121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121379845871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9202807 + ... + 9215986.

It is an arithmetic number, because the mean of its divisors is an integer number (13675954545).

Almost surely, 2^121379845870 is an apocalyptic number.

121379845870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121379845870 is a deficient number, since it is larger than the sum of its proper divisors (97435426850).

121379845870 is a wasteful number, since it uses less digits than its factorization.

121379845870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18419459.

The product of its (nonzero) digits is 3386880, while the sum is 55.

The spelling of 121379845870 in words is "one hundred twenty-one billion, three hundred seventy-nine million, eight hundred forty-five thousand, eight hundred seventy".