1131002211121 has 2 divisors, whose sum is σ = 1131002211122. Its totient is φ = 1131002211120.

The previous prime is 1131002211077. The next prime is 1131002211167. The reversal of 1131002211121 is 1211122001311.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 731880250000 + 399121961121 = 855500^2 + 631761^2 .

It is an emirp because it is prime and its reverse (1211122001311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1131002211121 - 2¹⁵ = 1131002178353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131002211095 and 1131002211104.

It is not a weakly prime, because it can be changed into another prime (1131002211191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565501105560 + 565501105561.

It is an arithmetic number, because the mean of its divisors is an integer number (565501105561).

Almost surely, 2^{1131002211121} is an apocalyptic number.

It is an amenable number.

1131002211121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131002211121 is an equidigital number, since it uses as much as digits as its factorization.

1131002211121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1131002211121 its reverse (1211122001311), we get a palindrome (2342124212432).

The spelling of 1131002211121 in words is "one trillion, one hundred thirty-one billion, two million, two hundred eleven thousand, one hundred twenty-one".