22121661323 has 2 divisors, whose sum is σ = 22121661324. Its totient is φ = 22121661322.

The previous prime is 22121661307. The next prime is 22121661329. The reversal of 22121661323 is 32316612122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22121661323 - 2⁴ = 22121661307 is a prime.

It is a super-2 number, since 2×22121661323² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22121661329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060830661 + 11060830662.

It is an arithmetic number, because the mean of its divisors is an integer number (11060830662).

Almost surely, 2^22121661323 is an apocalyptic number.

22121661323 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121661323 is an equidigital number, since it uses as much as digits as its factorization.

22121661323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 29.

The spelling of 22121661323 in words is "twenty-two billion, one hundred twenty-one million, six hundred sixty-one thousand, three hundred twenty-three".