1201111011131 has 2 divisors, whose sum is σ = 1201111011132. Its totient is φ = 1201111011130.

The previous prime is 1201111011049. The next prime is 1201111011137. The reversal of 1201111011131 is 1311101111021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1201111011131 - 2²² = 1201106816827 is a prime.

It is a super-2 number, since 2×1201111011131² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1201111011137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600555505565 + 600555505566.

It is an arithmetic number, because the mean of its divisors is an integer number (600555505566).

Almost surely, 2^{1201111011131} is an apocalyptic number.

1201111011131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201111011131 is an equidigital number, since it uses as much as digits as its factorization.

1201111011131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 14.

Adding to 1201111011131 its reverse (1311101111021), we get a palindrome (2512212122152).

The spelling of 1201111011131 in words is "one trillion, two hundred one billion, one hundred eleven million, eleven thousand, one hundred thirty-one".