22299961 has 2 divisors, whose sum is σ = 22299962. Its totient is φ = 22299960.

The previous prime is 22299947. The next prime is 22300001. The reversal of 22299961 is 16999222.

22299961 is nontrivially palindromic in base 15.

It is an a-pointer prime, because the next prime (22300001) can be obtained adding 22299961 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15848361 + 6451600 = 3981^2 + 2540^2 .

It is a cyclic number.

It is not a de Polignac number, because 22299961 - 2¹⁷ = 22168889 is a prime.

It is not a weakly prime, because it can be changed into another prime (22299911) 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, 11149980 + 11149981.

It is an arithmetic number, because the mean of its divisors is an integer number (11149981).

Almost surely, 2^22299961 is an apocalyptic number.

It is an amenable number.

22299961 is a deficient number, since it is larger than the sum of its proper divisors (1).

22299961 is an equidigital number, since it uses as much as digits as its factorization.

22299961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 40.

The square root of 22299961 is about 4722.2834518906. The cubic root of 22299961 is about 281.4716773463.

The spelling of 22299961 in words is "twenty-two million, two hundred ninety-nine thousand, nine hundred sixty-one".