116922279721 has 27 divisors (see below), whose sum is σ = 131269220901. Its totient is φ = 104091702624.

The previous prime is 116922279709. The next prime is 116922279731. The reversal of 116922279721 is 127972229611.

The square root of 116922279721 is 341939.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 14992778025 + 101929501696 = 122445^2 + 319264^2 .

It is not a de Polignac number, because 116922279721 - 2¹⁷ = 116922148649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (116922279701) 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 26 ways as a sum of consecutive naturals, for example, 128910550 + ... + 128911456.

Almost surely, 2^116922279721 is an apocalyptic number.

116922279721 is the 341939-th square number.

116922279721 is the 170970-th centered octagonal number.

It is an amenable number.

116922279721 is a deficient number, since it is larger than the sum of its proper divisors (14346941180).

116922279721 is an frugal number, since it uses more digits than its factorization.

116922279721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898 (or 949 counting only the distinct ones).

The product of its digits is 381024, while the sum is 49.

Multiplying 116922279721 by its sum of digits (49), we get a square (5729191706329 = 2393573²).

The spelling of 116922279721 in words is "one hundred sixteen billion, nine hundred twenty-two million, two hundred seventy-nine thousand, seven hundred twenty-one".