1233311113081 has 2 divisors, whose sum is σ = 1233311113082. Its totient is φ = 1233311113080.

The previous prime is 1233311113031. The next prime is 1233311113169. The reversal of 1233311113081 is 1803111133321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 852868873081 + 380442240000 = 923509^2 + 616800^2 .

It is a cyclic number.

It is not a de Polignac number, because 1233311113081 - 2⁹ = 1233311112569 is a prime.

It is a super-2 number, since 2×1233311113081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1233311113031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616655556540 + 616655556541.

It is an arithmetic number, because the mean of its divisors is an integer number (616655556541).

Almost surely, 2^{1233311113081} is an apocalyptic number.

It is an amenable number.

1233311113081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1233311113081 is an equidigital number, since it uses as much as digits as its factorization.

1233311113081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 1233311113081 in words is "one trillion, two hundred thirty-three billion, three hundred eleven million, one hundred thirteen thousand, eighty-one".