1121211121231 has 2 divisors, whose sum is σ = 1121211121232. Its totient is φ = 1121211121230.

The previous prime is 1121211121207. The next prime is 1121211121279. The reversal of 1121211121231 is 1321211121211.

It is a m-pointer prime, because the next prime (1121211121279) can be obtained adding 1121211121231 to its product of digits (48).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121211121231 - 2³³ = 1112621186639 is a prime.

It is a super-2 number, since 2×1121211121231² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1121211121199 and 1121211121208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121211121631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560605560615 + 560605560616.

It is an arithmetic number, because the mean of its divisors is an integer number (560605560616).

Almost surely, 2^{1121211121231} is an apocalyptic number.

1121211121231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121211121231 is an equidigital number, since it uses as much as digits as its factorization.

1121211121231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48, while the sum is 19.

Adding to 1121211121231 its reverse (1321211121211), we get a palindrome (2442422242442).

The spelling of 1121211121231 in words is "one trillion, one hundred twenty-one billion, two hundred eleven million, one hundred twenty-one thousand, two hundred thirty-one".