121229380917 has 16 divisors (see below), whose sum is σ = 179652876480. Its totient is φ = 80795380176.

The previous prime is 121229380907. The next prime is 121229380967. The reversal of 121229380917 is 719083922121.

It is not a de Polignac number, because 121229380917 - 2²² = 121225186613 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121229380907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 580378 + ... + 761115.

It is an arithmetic number, because the mean of its divisors is an integer number (11228304780).

Almost surely, 2^121229380917 is an apocalyptic number.

It is an amenable number.

121229380917 is a deficient number, since it is larger than the sum of its proper divisors (58423495563).

121229380917 is a wasteful number, since it uses less digits than its factorization.

121229380917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344849 (or 1344843 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The spelling of 121229380917 in words is "one hundred twenty-one billion, two hundred twenty-nine million, three hundred eighty thousand, nine hundred seventeen".