2211201011977 has 2 divisors, whose sum is σ = 2211201011978. Its totient is φ = 2211201011976.

The previous prime is 2211201011893. The next prime is 2211201012029. The reversal of 2211201011977 is 7791101021122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1237843157056 + 973357854921 = 1112584^2 + 986589^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2211201011977 is a prime.

It is not a weakly prime, because it can be changed into another prime (2211201021977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105600505988 + 1105600505989.

It is an arithmetic number, because the mean of its divisors is an integer number (1105600505989).

Almost surely, 2^{2211201011977} is an apocalyptic number.

It is an amenable number.

2211201011977 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211201011977 is an equidigital number, since it uses as much as digits as its factorization.

2211201011977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 34.

The spelling of 2211201011977 in words is "two trillion, two hundred eleven billion, two hundred one million, eleven thousand, nine hundred seventy-seven".