1111220011123 has 2 divisors, whose sum is σ = 1111220011124. Its totient is φ = 1111220011122.

The previous prime is 1111220011103. The next prime is 1111220011127. The reversal of 1111220011123 is 3211100221111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1111220011123 - 2⁹ = 1111220010611 is a prime.

It is a super-2 number, since 2×1111220011123² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1111220011097 and 1111220011106.

It is not a weakly prime, because it can be changed into another prime (1111220011127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555610005561 + 555610005562.

It is an arithmetic number, because the mean of its divisors is an integer number (555610005562).

Almost surely, 2^{1111220011123} is an apocalyptic number.

1111220011123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111220011123 is an equidigital number, since it uses as much as digits as its factorization.

1111220011123 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 16.

Adding to 1111220011123 its reverse (3211100221111), we get a palindrome (4322320232234).

The spelling of 1111220011123 in words is "one trillion, one hundred eleven billion, two hundred twenty million, eleven thousand, one hundred twenty-three".