22011102121609 has 2 divisors, whose sum is σ = 22011102121610. Its totient is φ = 22011102121608.

The previous prime is 22011102121607. The next prime is 22011102121643. The reversal of 22011102121609 is 90612120111022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16332889711609 + 5678212410000 = 4041397^2 + 2382900^2 .

It is a cyclic number.

It is not a de Polignac number, because 22011102121609 - 2¹ = 22011102121607 is a prime.

Together with 22011102121607, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22011102121601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11005551060804 + 11005551060805.

It is an arithmetic number, because the mean of its divisors is an integer number (11005551060805).

Almost surely, 2^{22011102121609} is an apocalyptic number.

It is an amenable number.

22011102121609 is a deficient number, since it is larger than the sum of its proper divisors (1).

22011102121609 is an equidigital number, since it uses as much as digits as its factorization.

22011102121609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 28.

The spelling of 22011102121609 in words is "twenty-two trillion, eleven billion, one hundred two million, one hundred twenty-one thousand, six hundred nine".