121619934249216 has 144 divisors (see below), whose sum is σ = 351969667061376. Its totient is φ = 37058202206208.

The previous prime is 121619934249211. The next prime is 121619934249251. The reversal of 121619934249216 is 612942439916121.

It is a super-2 number, since 2×121619934249216² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121619934249216.

It is not an unprimeable number, because it can be changed into a prime (121619934249211) 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, 58105065 + ... + 60161768.

Almost surely, 2^{121619934249216} is an apocalyptic number.

121619934249216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121619934249216 is an abundant number, since it is smaller than the sum of its proper divisors (230349732812160).

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

121619934249216 is a wasteful number, since it uses less digits than its factorization.

121619934249216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118266968 (or 118266954 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 60.

The spelling of 121619934249216 in words is "one hundred twenty-one trillion, six hundred nineteen billion, nine hundred thirty-four million, two hundred forty-nine thousand, two hundred sixteen".