1100111220101 has 4 divisors (see below), whose sum is σ = 1102939269900. Its totient is φ = 1097283170304.

The previous prime is 1100111220031. The next prime is 1100111220253. The reversal of 1100111220101 is 1010221110011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 432965316001 + 667145904100 = 658001^2 + 816790^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100111220101 - 2³⁰ = 1099037478277 is a prime.

It is a super-2 number, since 2×1100111220101² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100111220001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1414024316 + ... + 1414025093.

It is an arithmetic number, because the mean of its divisors is an integer number (275734817475).

Almost surely, 2^{1100111220101} is an apocalyptic number.

It is an amenable number.

1100111220101 is a deficient number, since it is larger than the sum of its proper divisors (2828049799).

1100111220101 is an equidigital number, since it uses as much as digits as its factorization.

1100111220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2828049798.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1100111220101 its reverse (1010221110011), we get a palindrome (2110332330112).

The spelling of 1100111220101 in words is "one trillion, one hundred billion, one hundred eleven million, two hundred twenty thousand, one hundred one".