22339101818821 has 2 divisors, whose sum is σ = 22339101818822. Its totient is φ = 22339101818820.

The previous prime is 22339101818783. The next prime is 22339101818899. The reversal of 22339101818821 is 12881810193322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19435533530625 + 2903568288196 = 4408575^2 + 1703986^2 .

It is a cyclic number.

It is not a de Polignac number, because 22339101818821 - 2¹⁹ = 22339101294533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22339101828821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11169550909410 + 11169550909411.

It is an arithmetic number, because the mean of its divisors is an integer number (11169550909411).

Almost surely, 2^{22339101818821} is an apocalyptic number.

It is an amenable number.

22339101818821 is a deficient number, since it is larger than the sum of its proper divisors (1).

22339101818821 is an equidigital number, since it uses as much as digits as its factorization.

22339101818821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 49.

The spelling of 22339101818821 in words is "twenty-two trillion, three hundred thirty-nine billion, one hundred one million, eight hundred eighteen thousand, eight hundred twenty-one".