1121231202331 has 2 divisors, whose sum is σ = 1121231202332. Its totient is φ = 1121231202330.

The previous prime is 1121231202323. The next prime is 1121231202341. The reversal of 1121231202331 is 1332021321211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121231202331 - 2³ = 1121231202323 is a prime.

It is a super-2 number, since 2×1121231202331² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1121231202341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560615601165 + 560615601166.

It is an arithmetic number, because the mean of its divisors is an integer number (560615601166).

Almost surely, 2^{1121231202331} is an apocalyptic number.

1121231202331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121231202331 is an equidigital number, since it uses as much as digits as its factorization.

1121231202331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1121231202331 its reverse (1332021321211), we get a palindrome (2453252523542).

The spelling of 1121231202331 in words is "one trillion, one hundred twenty-one billion, two hundred thirty-one million, two hundred two thousand, three hundred thirty-one".