22021130987 has 2 divisors, whose sum is σ = 22021130988. Its totient is φ = 22021130986.

The previous prime is 22021130983. The next prime is 22021131001. The reversal of 22021130987 is 78903112022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22021130987 - 2² = 22021130983 is a prime.

It is a super-2 number, since 2×22021130987² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22021130983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010565493 + 11010565494.

It is an arithmetic number, because the mean of its divisors is an integer number (11010565494).

Almost surely, 2^22021130987 is an apocalyptic number.

22021130987 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021130987 is an equidigital number, since it uses as much as digits as its factorization.

22021130987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 35.

The spelling of 22021130987 in words is "twenty-two billion, twenty-one million, one hundred thirty thousand, nine hundred eighty-seven".