22221786087269 has 2 divisors, whose sum is σ = 22221786087270. Its totient is φ = 22221786087268.

The previous prime is 22221786087239. The next prime is 22221786087271. The reversal of 22221786087269 is 96278068712222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16830612915169 + 5391173172100 = 4102513^2 + 2321890^2 .

It is a cyclic number.

It is not a de Polignac number, because 22221786087269 - 2⁸ = 22221786087013 is a prime.

It is a super-2 number, since 2×22221786087269² (a number of 27 digits) contains 22 as substring.

Together with 22221786087271, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22221786087239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110893043634 + 11110893043635.

It is an arithmetic number, because the mean of its divisors is an integer number (11110893043635).

Almost surely, 2^{22221786087269} is an apocalyptic number.

It is an amenable number.

22221786087269 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221786087269 is an equidigital number, since it uses as much as digits as its factorization.

22221786087269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32514048, while the sum is 62.

The spelling of 22221786087269 in words is "twenty-two trillion, two hundred twenty-one billion, seven hundred eighty-six million, eighty-seven thousand, two hundred sixty-nine".