22220951 has 2 divisors, whose sum is σ = 22220952. Its totient is φ = 22220950.

The previous prime is 22220927. The next prime is 22220953. The reversal of 22220951 is 15902222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22220951 - 2¹⁰ = 22219927 is a prime.

Together with 22220953, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22220953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110475 + 11110476.

It is an arithmetic number, because the mean of its divisors is an integer number (11110476).

Almost surely, 2^22220951 is an apocalyptic number.

22220951 is a deficient number, since it is larger than the sum of its proper divisors (1).

22220951 is an equidigital number, since it uses as much as digits as its factorization.

22220951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 22220951 is about 4713.9103725039. The cubic root of 22220951 is about 281.1388607133.

The spelling of 22220951 in words is "twenty-two million, two hundred twenty thousand, nine hundred fifty-one".