22012212199709 has 2 divisors, whose sum is σ = 22012212199710. Its totient is φ = 22012212199708.

The previous prime is 22012212199687. The next prime is 22012212199723. The reversal of 22012212199709 is 90799121221022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21577390651609 + 434821548100 = 4645147^2 + 659410^2 .

It is a cyclic number.

It is not a de Polignac number, because 22012212199709 - 2¹⁶ = 22012212134173 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22012212199729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11006106099854 + 11006106099855.

It is an arithmetic number, because the mean of its divisors is an integer number (11006106099855).

Almost surely, 2^{22012212199709} is an apocalyptic number.

It is an amenable number.

22012212199709 is a deficient number, since it is larger than the sum of its proper divisors (1).

22012212199709 is an equidigital number, since it uses as much as digits as its factorization.

22012212199709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 47.

The spelling of 22012212199709 in words is "twenty-two trillion, twelve billion, two hundred twelve million, one hundred ninety-nine thousand, seven hundred nine".