121033881612 has 120 divisors (see below), whose sum is σ = 363322615040. Its totient is φ = 34417081440.

The previous prime is 121033881607. The next prime is 121033881659. The reversal of 121033881612 is 216188330121.

121033881612 is a `hidden beast` number, since 1 + 2 + 1 + 0 + 3 + 38 + 8 + 1 + 612 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 352089 + ... + 605007.

Almost surely, 2^121033881612 is an apocalyptic number.

121033881612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121033881612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181661307520).

121033881612 is an abundant number, since it is smaller than the sum of its proper divisors (242288733428).

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

121033881612 is a wasteful number, since it uses less digits than its factorization.

121033881612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253153 (or 253142 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The spelling of 121033881612 in words is "one hundred twenty-one billion, thirty-three million, eight hundred eighty-one thousand, six hundred twelve".