121296840722 has 18 divisors (see below), whose sum is σ = 182705699367. Its totient is φ = 60395994636.

The previous prime is 121296840647. The next prime is 121296840767. The reversal of 121296840722 is 227048692121.

It can be written as a sum of positive squares in only one way, i.e., 60648420361 + 60648420361 = 246269^2 + 246269^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=246269.

It is a Duffinian number.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 188641733 + ... + 188642375.

Almost surely, 2^121296840722 is an apocalyptic number.

121296840722 is a deficient number, since it is larger than the sum of its proper divisors (61408858645).

121296840722 is an frugal number, since it uses more digits than its factorization.

121296840722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2054 (or 1028 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 121296840722 in words is "one hundred twenty-one billion, two hundred ninety-six million, eight hundred forty thousand, seven hundred twenty-two".