121417209870 has 64 divisors (see below), whose sum is σ = 318174877440. Its totient is φ = 29408313600.

The previous prime is 121417209869. The next prime is 121417209899. The reversal of 121417209870 is 78902714121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 209625 + ... + 535515.

It is an arithmetic number, because the mean of its divisors is an integer number (4971482460).

Almost surely, 2^121417209870 is an apocalyptic number.

121417209870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121417209870 is an abundant number, since it is smaller than the sum of its proper divisors (196757667570).

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

121417209870 is a wasteful number, since it uses less digits than its factorization.

121417209870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327041.

The product of its (nonzero) digits is 56448, while the sum is 42.

The spelling of 121417209870 in words is "one hundred twenty-one billion, four hundred seventeen million, two hundred nine thousand, eight hundred seventy".