1121411231 has 2 divisors, whose sum is σ = 1121411232. Its totient is φ = 1121411230.

The previous prime is 1121411219. The next prime is 1121411287. The reversal of 1121411231 is 1321141211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121411231 - 2⁶ = 1121411167 is a prime.

It is a super-2 number, since 2×1121411231² = 2515126298025870722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121411201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560705615 + 560705616.

It is an arithmetic number, because the mean of its divisors is an integer number (560705616).

Almost surely, 2^1121411231 is an apocalyptic number.

1121411231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121411231 is an equidigital number, since it uses as much as digits as its factorization.

1121411231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48, while the sum is 17.

The square root of 1121411231 is about 33487.4787196648. The cubic root of 1121411231 is about 1038.9348163851.

Adding to 1121411231 its reverse (1321141211), we get a palindrome (2442552442).

The spelling of 1121411231 in words is "one billion, one hundred twenty-one million, four hundred eleven thousand, two hundred thirty-one".