22222090691 has 2 divisors, whose sum is σ = 22222090692. Its totient is φ = 22222090690.

The previous prime is 22222090663. The next prime is 22222090721. The reversal of 22222090691 is 19609022222.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22222090691 - 2¹⁴ = 22222074307 is a prime.

It is not a weakly prime, because it can be changed into another prime (22222090601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11111045345 + 11111045346.

It is an arithmetic number, because the mean of its divisors is an integer number (11111045346).

Almost surely, 2^22222090691 is an apocalyptic number.

22222090691 is a deficient number, since it is larger than the sum of its proper divisors (1).

22222090691 is an equidigital number, since it uses as much as digits as its factorization.

22222090691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 22222090691 in words is "twenty-two billion, two hundred twenty-two million, ninety thousand, six hundred ninety-one".