2112961 has 2 divisors, whose sum is σ = 2112962. Its totient is φ = 2112960.

The previous prime is 2112953. The next prime is 2112973. The reversal of 2112961 is 1692112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1199025 + 913936 = 1095^2 + 956^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112961 - 2³ = 2112953 is a prime.

It is a Chen prime.

2112961 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2112161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056480 + 1056481.

It is an arithmetic number, because the mean of its divisors is an integer number (1056481).

2^2112961 is an apocalyptic number.

It is an amenable number.

2112961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112961 is an equidigital number, since it uses as much as digits as its factorization.

2112961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 22.

The square root of 2112961 is about 1453.6027655450. The cubic root of 2112961 is about 128.3208301006.

The spelling of 2112961 in words is "two million, one hundred twelve thousand, nine hundred sixty-one".