22161019399 has 2 divisors, whose sum is σ = 22161019400. Its totient is φ = 22161019398.

The previous prime is 22161019357. The next prime is 22161019403. The reversal of 22161019399 is 99391016122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22161019399 is a prime.

It is a super-2 number, since 2×22161019399² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22161019319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11080509699 + 11080509700.

It is an arithmetic number, because the mean of its divisors is an integer number (11080509700).

Almost surely, 2^22161019399 is an apocalyptic number.

22161019399 is a deficient number, since it is larger than the sum of its proper divisors (1).

22161019399 is an equidigital number, since it uses as much as digits as its factorization.

22161019399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 43.

The spelling of 22161019399 in words is "twenty-two billion, one hundred sixty-one million, nineteen thousand, three hundred ninety-nine".