22021423402049 has 2 divisors, whose sum is σ = 22021423402050. Its totient is φ = 22021423402048.

The previous prime is 22021423402007. The next prime is 22021423402079. The reversal of 22021423402049 is 94020432412022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21439048373824 + 582375028225 = 4630232^2 + 763135^2 .

It is a cyclic number.

It is not a de Polignac number, because 22021423402049 - 2³² = 22017128434753 is a prime.

It is a super-2 number, since 2×22021423402049² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22021423402079) 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, 11010711701024 + 11010711701025.

It is an arithmetic number, because the mean of its divisors is an integer number (11010711701025).

Almost surely, 2^{22021423402049} is an apocalyptic number.

It is an amenable number.

22021423402049 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021423402049 is an equidigital number, since it uses as much as digits as its factorization.

22021423402049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 35.

The spelling of 22021423402049 in words is "twenty-two trillion, twenty-one billion, four hundred twenty-three million, four hundred two thousand, forty-nine".