2211019949977 has 2 divisors, whose sum is σ = 2211019949978. Its totient is φ = 2211019949976.

The previous prime is 2211019949959. The next prime is 2211019950053. The reversal of 2211019949977 is 7799499101122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1490599251801 + 720420698176 = 1220901^2 + 848776^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2211019949977 is a prime.

It is not a weakly prime, because it can be changed into another prime (2211019949917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105509974988 + 1105509974989.

It is an arithmetic number, because the mean of its divisors is an integer number (1105509974989).

Almost surely, 2^{2211019949977} is an apocalyptic number.

It is an amenable number.

2211019949977 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211019949977 is an equidigital number, since it uses as much as digits as its factorization.

2211019949977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5143824, while the sum is 61.

The spelling of 2211019949977 in words is "two trillion, two hundred eleven billion, nineteen million, nine hundred forty-nine thousand, nine hundred seventy-seven".