111202211123 has 2 divisors, whose sum is σ = 111202211124. Its totient is φ = 111202211122.

The previous prime is 111202211093. The next prime is 111202211147. The reversal of 111202211123 is 321112202111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111202211123 - 2²⁴ = 111185433907 is a prime.

It is a super-2 number, since 2×111202211123² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111202211023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55601105561 + 55601105562.

It is an arithmetic number, because the mean of its divisors is an integer number (55601105562).

Almost surely, 2^111202211123 is an apocalyptic number.

111202211123 is a deficient number, since it is larger than the sum of its proper divisors (1).

111202211123 is an equidigital number, since it uses as much as digits as its factorization.

111202211123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 111202211123 its reverse (321112202111), we get a palindrome (432314413234).

The spelling of 111202211123 in words is "one hundred eleven billion, two hundred two million, two hundred eleven thousand, one hundred twenty-three".