22119498781 has 4 divisors (see below), whose sum is σ = 22494405600. Its totient is φ = 21744591964.

The previous prime is 22119498761. The next prime is 22119498787. The reversal of 22119498781 is 18789491122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22119498781 - 2²³ = 22111110173 is a prime.

It is a super-2 number, since 2×22119498781² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22119498787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187453321 + ... + 187453438.

It is an arithmetic number, because the mean of its divisors is an integer number (5623601400).

Almost surely, 2^22119498781 is an apocalyptic number.

It is an amenable number.

22119498781 is a deficient number, since it is larger than the sum of its proper divisors (374906819).

22119498781 is an equidigital number, since it uses as much as digits as its factorization.

22119498781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374906818.

The product of its digits is 580608, while the sum is 52.

The spelling of 22119498781 in words is "twenty-two billion, one hundred nineteen million, four hundred ninety-eight thousand, seven hundred eighty-one".