22119961 has 2 divisors, whose sum is σ = 22119962. Its totient is φ = 22119960.

The previous prime is 22119959. The next prime is 22119973. The reversal of 22119961 is 16991122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21206025 + 913936 = 4605^2 + 956^2 .

It is a cyclic number.

It is not a de Polignac number, because 22119961 - 2¹ = 22119959 is a prime.

Together with 22119959, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22119161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11059980 + 11059981.

It is an arithmetic number, because the mean of its divisors is an integer number (11059981).

Almost surely, 2^22119961 is an apocalyptic number.

It is an amenable number.

22119961 is a deficient number, since it is larger than the sum of its proper divisors (1).

22119961 is an equidigital number, since it uses as much as digits as its factorization.

22119961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 31.

The square root of 22119961 is about 4703.1862603984. The cubic root of 22119961 is about 280.7123062890.

The spelling of 22119961 in words is "twenty-two million, one hundred nineteen thousand, nine hundred sixty-one".