121725774016 has 112 divisors (see below), whose sum is σ = 318867812352. Its totient is φ = 44635852800.

The previous prime is 121725773987. The next prime is 121725774017. The reversal of 121725774016 is 610477527121.

It is a tau number, because it is divible by the number of its divisors (112).

It is not an unprimeable number, because it can be changed into a prime (121725774017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 642720 + ... + 810271.

Almost surely, 2^121725774016 is an apocalyptic number.

121725774016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121725774016 is an abundant number, since it is smaller than the sum of its proper divisors (197142038336).

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

121725774016 is a wasteful number, since it uses less digits than its factorization.

121725774016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1453038 (or 1453028 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 43.

The spelling of 121725774016 in words is "one hundred twenty-one billion, seven hundred twenty-five million, seven hundred seventy-four thousand, sixteen".