22222220087 has 2 divisors, whose sum is σ = 22222220088. Its totient is φ = 22222220086.

The previous prime is 22222220077. The next prime is 22222220101. The reversal of 22222220087 is 78002222222.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22222220087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22222220077) 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, 11111110043 + 11111110044.

It is an arithmetic number, because the mean of its divisors is an integer number (11111110044).

Almost surely, 2^22222220087 is an apocalyptic number.

22222220087 is a deficient number, since it is larger than the sum of its proper divisors (1).

22222220087 is an equidigital number, since it uses as much as digits as its factorization.

22222220087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7168, while the sum is 29.

The spelling of 22222220087 in words is "twenty-two billion, two hundred twenty-two million, two hundred twenty thousand, eighty-seven".