1123101121231 has 4 divisors (see below), whose sum is σ = 1137317591200. Its totient is φ = 1108884651264.

The previous prime is 1123101121189. The next prime is 1123101121267. The reversal of 1123101121231 is 1321211013211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123101121231 is a prime.

It is a super-2 number, since 2×1123101121231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1123101121199 and 1123101121208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123101121271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7108234866 + ... + 7108235023.

It is an arithmetic number, because the mean of its divisors is an integer number (284329397800).

Almost surely, 2^{1123101121231} is an apocalyptic number.

1123101121231 is a deficient number, since it is larger than the sum of its proper divisors (14216469969).

1123101121231 is an equidigital number, since it uses as much as digits as its factorization.

1123101121231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14216469968.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1123101121231 its reverse (1321211013211), we get a palindrome (2444312134442).

The spelling of 1123101121231 in words is "one trillion, one hundred twenty-three billion, one hundred one million, one hundred twenty-one thousand, two hundred thirty-one".