22009991929 has 2 divisors, whose sum is σ = 22009991930. Its totient is φ = 22009991928.

The previous prime is 22009991917. The next prime is 22009991957. The reversal of 22009991929 is 92919990022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21654594025 + 355397904 = 147155^2 + 18852^2 .

It is a cyclic number.

It is not a de Polignac number, because 22009991929 - 2⁵ = 22009991897 is a prime.

It is not a weakly prime, because it can be changed into another prime (22009991999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11004995964 + 11004995965.

It is an arithmetic number, because the mean of its divisors is an integer number (11004995965).

Almost surely, 2^22009991929 is an apocalyptic number.

It is an amenable number.

22009991929 is a deficient number, since it is larger than the sum of its proper divisors (1).

22009991929 is an equidigital number, since it uses as much as digits as its factorization.

22009991929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 472392, while the sum is 52.

The spelling of 22009991929 in words is "twenty-two billion, nine million, nine hundred ninety-one thousand, nine hundred twenty-nine".