1231102232011 has 2 divisors, whose sum is σ = 1231102232012. Its totient is φ = 1231102232010.

The previous prime is 1231102231991. The next prime is 1231102232027. The reversal of 1231102232011 is 1102322011321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1231102232011 - 2¹⁹ = 1231101707723 is a prime.

It is a super-2 number, since 2×1231102232011² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1231102232011.

It is not a weakly prime, because it can be changed into another prime (1231102232071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615551116005 + 615551116006.

It is an arithmetic number, because the mean of its divisors is an integer number (615551116006).

Almost surely, 2^{1231102232011} is an apocalyptic number.

1231102232011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231102232011 is an equidigital number, since it uses as much as digits as its factorization.

1231102232011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1231102232011 its reverse (1102322011321), we get a palindrome (2333424243332).

The spelling of 1231102232011 in words is "one trillion, two hundred thirty-one billion, one hundred two million, two hundred thirty-two thousand, eleven".