22051061987 has 2 divisors, whose sum is σ = 22051061988. Its totient is φ = 22051061986.

The previous prime is 22051061911. The next prime is 22051062029. The reversal of 22051061987 is 78916015022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22051061987 - 2¹² = 22051057891 is a prime.

It is not a weakly prime, because it can be changed into another prime (22051061587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11025530993 + 11025530994.

It is an arithmetic number, because the mean of its divisors is an integer number (11025530994).

Almost surely, 2^22051061987 is an apocalyptic number.

22051061987 is a deficient number, since it is larger than the sum of its proper divisors (1).

22051061987 is an equidigital number, since it uses as much as digits as its factorization.

22051061987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 22051061987 in words is "twenty-two billion, fifty-one million, sixty-one thousand, nine hundred eighty-seven".