1111100222129 has 2 divisors, whose sum is σ = 1111100222130. Its totient is φ = 1111100222128.

The previous prime is 1111100222123. The next prime is 1111100222207. The reversal of 1111100222129 is 9212220011111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 869606605729 + 241493616400 = 932527^2 + 491420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111100222129 is a prime.

It is a super-2 number, since 2×1111100222129² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1111100222123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555550111064 + 555550111065.

It is an arithmetic number, because the mean of its divisors is an integer number (555550111065).

Almost surely, 2^{1111100222129} is an apocalyptic number.

It is an amenable number.

1111100222129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111100222129 is an equidigital number, since it uses as much as digits as its factorization.

1111100222129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 1111100222129 in words is "one trillion, one hundred eleven billion, one hundred million, two hundred twenty-two thousand, one hundred twenty-nine".