1111331203123 has 2 divisors, whose sum is σ = 1111331203124. Its totient is φ = 1111331203122.

The previous prime is 1111331203097. The next prime is 1111331203163. The reversal of 1111331203123 is 3213021331111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111331203123 - 2⁵ = 1111331203091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111331203094 and 1111331203103.

It is not a weakly prime, because it can be changed into another prime (1111331203163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555665601561 + 555665601562.

It is an arithmetic number, because the mean of its divisors is an integer number (555665601562).

Almost surely, 2^{1111331203123} is an apocalyptic number.

1111331203123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111331203123 is an equidigital number, since it uses as much as digits as its factorization.

1111331203123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1111331203123 its reverse (3213021331111), we get a palindrome (4324352534234).

The spelling of 1111331203123 in words is "one trillion, one hundred eleven billion, three hundred thirty-one million, two hundred three thousand, one hundred twenty-three".