22221122087 has 2 divisors, whose sum is σ = 22221122088. Its totient is φ = 22221122086.

The previous prime is 22221122071. The next prime is 22221122107. The reversal of 22221122087 is 78022112222.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22221122087 - 2⁴ = 22221122071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22221127087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110561043 + 11110561044.

It is an arithmetic number, because the mean of its divisors is an integer number (11110561044).

Almost surely, 2^22221122087 is an apocalyptic number.

22221122087 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221122087 is an equidigital number, since it uses as much as digits as its factorization.

22221122087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 29.

The spelling of 22221122087 in words is "twenty-two billion, two hundred twenty-one million, one hundred twenty-two thousand, eighty-seven".