16222961 has 2 divisors, whose sum is σ = 16222962. Its totient is φ = 16222960.

The previous prime is 16222939. The next prime is 16222963. The reversal of 16222961 is 16922261.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15054400 + 1168561 = 3880^2 + 1081^2 .

It is a cyclic number.

It is not a de Polignac number, because 16222961 - 2⁶ = 16222897 is a prime.

Together with 16222963, 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 (16222963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8111480 + 8111481.

It is an arithmetic number, because the mean of its divisors is an integer number (8111481).

Almost surely, 2^16222961 is an apocalyptic number.

It is an amenable number.

16222961 is a deficient number, since it is larger than the sum of its proper divisors (1).

16222961 is an equidigital number, since it uses as much as digits as its factorization.

16222961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 29.

The square root of 16222961 is about 4027.7737026799. The cubic root of 16222961 is about 253.1492867211.

The spelling of 16222961 in words is "sixteen million, two hundred twenty-two thousand, nine hundred sixty-one".