2116822961 has 4 divisors (see below), whose sum is σ = 2309261424. Its totient is φ = 1924384500.

The previous prime is 2116822957. The next prime is 2116822969. The reversal of 2116822961 is 1692286112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2116822961 - 2² = 2116822957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2116822969) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 96219215 + ... + 96219236.

It is an arithmetic number, because the mean of its divisors is an integer number (577315356).

Almost surely, 2^2116822961 is an apocalyptic number.

It is an amenable number.

2116822961 is a deficient number, since it is larger than the sum of its proper divisors (192438463).

2116822961 is a wasteful number, since it uses less digits than its factorization.

2116822961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192438462.

The product of its digits is 20736, while the sum is 38.

The square root of 2116822961 is about 46008.9443586788. The cubic root of 2116822961 is about 1283.9896191372.

The spelling of 2116822961 in words is "two billion, one hundred sixteen million, eight hundred twenty-two thousand, nine hundred sixty-one".