22020220091 has 2 divisors, whose sum is σ = 22020220092. Its totient is φ = 22020220090.

The previous prime is 22020220051. The next prime is 22020220151. The reversal of 22020220091 is 19002202022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22020220091 - 2¹⁴ = 22020203707 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (22020220051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010110045 + 11010110046.

It is an arithmetic number, because the mean of its divisors is an integer number (11010110046).

Almost surely, 2^22020220091 is an apocalyptic number.

22020220091 is a deficient number, since it is larger than the sum of its proper divisors (1).

22020220091 is an equidigital number, since it uses as much as digits as its factorization.

22020220091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The spelling of 22020220091 in words is "twenty-two billion, twenty million, two hundred twenty thousand, ninety-one".