22111019977 has 2 divisors, whose sum is σ = 22111019978. Its totient is φ = 22111019976.

The previous prime is 22111019971. The next prime is 22111019993. The reversal of 22111019977 is 77991011122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21510328896 + 600691081 = 146664^2 + 24509^2 .

It is a cyclic number.

It is not a de Polignac number, because 22111019977 - 2³ = 22111019969 is a prime.

It is not a weakly prime, because it can be changed into another prime (22111019971) 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, 11055509988 + 11055509989.

It is an arithmetic number, because the mean of its divisors is an integer number (11055509989).

Almost surely, 2^22111019977 is an apocalyptic number.

It is an amenable number.

22111019977 is a deficient number, since it is larger than the sum of its proper divisors (1).

22111019977 is an equidigital number, since it uses as much as digits as its factorization.

22111019977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 40.

The spelling of 22111019977 in words is "twenty-two billion, one hundred eleven million, nineteen thousand, nine hundred seventy-seven".