22101122009 has 2 divisors, whose sum is σ = 22101122010. Its totient is φ = 22101122008.

The previous prime is 22101121979. The next prime is 22101122077. The reversal of 22101122009 is 90022110122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21534682009 + 566440000 = 146747^2 + 23800^2 .

It is a cyclic number.

It is not a de Polignac number, because 22101122009 - 2⁸ = 22101121753 is a prime.

It is not a weakly prime, because it can be changed into another prime (22101124009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11050561004 + 11050561005.

It is an arithmetic number, because the mean of its divisors is an integer number (11050561005).

Almost surely, 2^22101122009 is an apocalyptic number.

It is an amenable number.

22101122009 is a deficient number, since it is larger than the sum of its proper divisors (1).

22101122009 is an equidigital number, since it uses as much as digits as its factorization.

22101122009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 22101122009 in words is "twenty-two billion, one hundred one million, one hundred twenty-two thousand, nine".