2111120212801 has 2 divisors, whose sum is σ = 2111120212802. Its totient is φ = 2111120212800.

The previous prime is 2111120212787. The next prime is 2111120212811. The reversal of 2111120212801 is 1082120211112.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1977328130625 + 133792082176 = 1406175^2 + 365776^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111120212801 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111120212811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055560106400 + 1055560106401.

It is an arithmetic number, because the mean of its divisors is an integer number (1055560106401).

Almost surely, 2^{2111120212801} is an apocalyptic number.

It is an amenable number.

2111120212801 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111120212801 is an equidigital number, since it uses as much as digits as its factorization.

2111120212801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 22.

Adding to 2111120212801 its reverse (1082120211112), we get a palindrome (3193240423913).

The spelling of 2111120212801 in words is "two trillion, one hundred eleven billion, one hundred twenty million, two hundred twelve thousand, eight hundred one".