1111111123101 has 16 divisors (see below), whose sum is σ = 1693409894400. Its totient is φ = 634812573168.

The previous prime is 1111111123097. The next prime is 1111111123117. The reversal of 1111111123101 is 1013211111111.

It is a happy number.

It is not a de Polignac number, because 1111111123101 - 2² = 1111111123097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111111123121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4376461 + ... + 4623378.

It is an arithmetic number, because the mean of its divisors is an integer number (105838118400).

Almost surely, 2^{1111111123101} is an apocalyptic number.

It is an amenable number.

1111111123101 is a deficient number, since it is larger than the sum of its proper divisors (582298771299).

1111111123101 is an equidigital number, since it uses as much as digits as its factorization.

1111111123101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9005728.

The product of its (nonzero) digits is 6, while the sum is 15.

Adding to 1111111123101 its reverse (1013211111111), we get a palindrome (2124322234212).

The spelling of 1111111123101 in words is "one trillion, one hundred eleven billion, one hundred eleven million, one hundred twenty-three thousand, one hundred one".