2111232233081 has 2 divisors, whose sum is σ = 2111232233082. Its totient is φ = 2111232233080.

The previous prime is 2111232233021. The next prime is 2111232233093. The reversal of 2111232233081 is 1803322321112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2061421135225 + 49811097856 = 1435765^2 + 223184^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111232233081 is a prime.

It is a super-2 number, since 2×2111232233081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2111232233021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055616116540 + 1055616116541.

It is an arithmetic number, because the mean of its divisors is an integer number (1055616116541).

Almost surely, 2^{2111232233081} is an apocalyptic number.

It is an amenable number.

2111232233081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111232233081 is an equidigital number, since it uses as much as digits as its factorization.

2111232233081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 2111232233081 its reverse (1803322321112), we get a palindrome (3914554554193).

The spelling of 2111232233081 in words is "two trillion, one hundred eleven billion, two hundred thirty-two million, two hundred thirty-three thousand, eighty-one".