1121121200531 has 2 divisors, whose sum is σ = 1121121200532. Its totient is φ = 1121121200530.

The previous prime is 1121121200513. The next prime is 1121121200543. The reversal of 1121121200531 is 1350021211211.

Together with previous prime (1121121200513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121121200531 - 2²⁶ = 1121054091667 is a prime.

It is a super-2 number, since 2×1121121200531² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1121121200561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560560600265 + 560560600266.

It is an arithmetic number, because the mean of its divisors is an integer number (560560600266).

Almost surely, 2^{1121121200531} is an apocalyptic number.

1121121200531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121121200531 is an equidigital number, since it uses as much as digits as its factorization.

1121121200531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 20.

Adding to 1121121200531 its reverse (1350021211211), we get a palindrome (2471142411742).

The spelling of 1121121200531 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred thousand, five hundred thirty-one".