121177439712 has 72 divisors (see below), whose sum is σ = 393826685616. Its totient is φ = 34622125056.

The previous prime is 121177439689. The next prime is 121177439737. The reversal of 121177439712 is 217934771121.

It is a tau number, because it is divible by the number of its divisors (72).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30051913 + ... + 30055944.

It is an arithmetic number, because the mean of its divisors is an integer number (5469815078).

Almost surely, 2^121177439712 is an apocalyptic number.

121177439712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121177439712 is an abundant number, since it is smaller than the sum of its proper divisors (272649245904).

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

121177439712 is a wasteful number, since it uses less digits than its factorization.

121177439712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60107880 (or 60107869 counting only the distinct ones).

The product of its digits is 148176, while the sum is 45.

The spelling of 121177439712 in words is "one hundred twenty-one billion, one hundred seventy-seven million, four hundred thirty-nine thousand, seven hundred twelve".