1201112111231 has 2 divisors, whose sum is σ = 1201112111232. Its totient is φ = 1201112111230.

The previous prime is 1201112111209. The next prime is 1201112111237. The reversal of 1201112111231 is 1321112111021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201112111231 is a prime.

It is a super-2 number, since 2×1201112111231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201112111237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600556055615 + 600556055616.

It is an arithmetic number, because the mean of its divisors is an integer number (600556055616).

Almost surely, 2^{1201112111231} is an apocalyptic number.

1201112111231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201112111231 is an equidigital number, since it uses as much as digits as its factorization.

1201112111231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 1201112111231 its reverse (1321112111021), we get a palindrome (2522224222252).

The spelling of 1201112111231 in words is "one trillion, two hundred one billion, one hundred twelve million, one hundred eleven thousand, two hundred thirty-one".