1111122101123 has 2 divisors, whose sum is σ = 1111122101124. Its totient is φ = 1111122101122.

The previous prime is 1111122101107. The next prime is 1111122101147. The reversal of 1111122101123 is 3211012211111.

It is a weak prime.

It is an emirp because it is prime and its reverse (3211012211111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1111122101123 - 2⁴ = 1111122101107 is a prime.

It is a super-2 number, since 2×1111122101123² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1111122101623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555561050561 + 555561050562.

It is an arithmetic number, because the mean of its divisors is an integer number (555561050562).

Almost surely, 2^{1111122101123} is an apocalyptic number.

1111122101123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111122101123 is an equidigital number, since it uses as much as digits as its factorization.

1111122101123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 1111122101123 its reverse (3211012211111), we get a palindrome (4322134312234).

The spelling of 1111122101123 in words is "one trillion, one hundred eleven billion, one hundred twenty-two million, one hundred one thousand, one hundred twenty-three".