22021210087 has 2 divisors, whose sum is σ = 22021210088. Its totient is φ = 22021210086.

The previous prime is 22021210073. The next prime is 22021210093. The reversal of 22021210087 is 78001212022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22021210087 - 2¹¹ = 22021208039 is a prime.

It is a super-3 number, since 3×22021210087³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22021213087) 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, 11010605043 + 11010605044.

It is an arithmetic number, because the mean of its divisors is an integer number (11010605044).

Almost surely, 2^22021210087 is an apocalyptic number.

22021210087 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021210087 is an equidigital number, since it uses as much as digits as its factorization.

22021210087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

The spelling of 22021210087 in words is "twenty-two billion, twenty-one million, two hundred ten thousand, eighty-seven".