22149811 has 2 divisors, whose sum is σ = 22149812. Its totient is φ = 22149810.

The previous prime is 22149797. The next prime is 22149833. The reversal of 22149811 is 11894122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22149811 - 2²³ = 13761203 is a prime.

It is a super-2 number, since 2×22149811² = 981228254671442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22149811.

It is not a weakly prime, because it can be changed into another prime (22149871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11074905 + 11074906.

It is an arithmetic number, because the mean of its divisors is an integer number (11074906).

Almost surely, 2^22149811 is an apocalyptic number.

22149811 is a deficient number, since it is larger than the sum of its proper divisors (1).

22149811 is an equidigital number, since it uses as much as digits as its factorization.

22149811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 28.

The square root of 22149811 is about 4706.3585711248. The cubic root of 22149811 is about 280.8385195315.

The spelling of 22149811 in words is "twenty-two million, one hundred forty-nine thousand, eight hundred eleven".