22401811 has 2 divisors, whose sum is σ = 22401812. Its totient is φ = 22401810.

The previous prime is 22401803. The next prime is 22401851. The reversal of 22401811 is 11810422.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22401811 - 2³ = 22401803 is a prime.

It is a super-2 number, since 2×22401811² = 1003682272159442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22401851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11200905 + 11200906.

It is an arithmetic number, because the mean of its divisors is an integer number (11200906).

Almost surely, 2^22401811 is an apocalyptic number.

22401811 is a deficient number, since it is larger than the sum of its proper divisors (1).

22401811 is an equidigital number, since it uses as much as digits as its factorization.

22401811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 22401811 is about 4733.0551444073. The cubic root of 22401811 is about 281.8995458981.

The spelling of 22401811 in words is "twenty-two million, four hundred one thousand, eight hundred eleven".