22111840493 has 2 divisors, whose sum is σ = 22111840494. Its totient is φ = 22111840492.

The previous prime is 22111840447. The next prime is 22111840519. The reversal of 22111840493 is 39404811122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13585534249 + 8526306244 = 116557^2 + 92338^2 .

It is a cyclic number.

It is not a de Polignac number, because 22111840493 - 2¹⁶ = 22111774957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22111840403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11055920246 + 11055920247.

It is an arithmetic number, because the mean of its divisors is an integer number (11055920247).

Almost surely, 2^22111840493 is an apocalyptic number.

It is an amenable number.

22111840493 is a deficient number, since it is larger than the sum of its proper divisors (1).

22111840493 is an equidigital number, since it uses as much as digits as its factorization.

22111840493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 35.

The spelling of 22111840493 in words is "twenty-two billion, one hundred eleven million, eight hundred forty thousand, four hundred ninety-three".