22122461 has 2 divisors, whose sum is σ = 22122462. Its totient is φ = 22122460.

The previous prime is 22122427. The next prime is 22122469. The reversal of 22122461 is 16422122.

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., 11689561 + 10432900 = 3419^2 + 3230^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22122461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22122469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11061230 + 11061231.

It is an arithmetic number, because the mean of its divisors is an integer number (11061231).

Almost surely, 2^22122461 is an apocalyptic number.

It is an amenable number.

22122461 is a deficient number, since it is larger than the sum of its proper divisors (1).

22122461 is an equidigital number, since it uses as much as digits as its factorization.

22122461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 384, while the sum is 20.

The square root of 22122461 is about 4703.4520301583. The cubic root of 22122461 is about 280.7228812674.

Adding to 22122461 its reverse (16422122), we get a palindrome (38544583).

The spelling of 22122461 in words is "twenty-two million, one hundred twenty-two thousand, four hundred sixty-one".