22051952987 has 2 divisors, whose sum is σ = 22051952988. Its totient is φ = 22051952986.

The previous prime is 22051952963. The next prime is 22051953067. The reversal of 22051952987 is 78925915022.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22051952987 - 2⁸ = 22051952731 is a prime.

It is not a weakly prime, because it can be changed into another prime (22051952927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11025976493 + 11025976494.

It is an arithmetic number, because the mean of its divisors is an integer number (11025976494).

Almost surely, 2^22051952987 is an apocalyptic number.

22051952987 is a deficient number, since it is larger than the sum of its proper divisors (1).

22051952987 is an equidigital number, since it uses as much as digits as its factorization.

22051952987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 907200, while the sum is 50.

The spelling of 22051952987 in words is "twenty-two billion, fifty-one million, nine hundred fifty-two thousand, nine hundred eighty-seven".