1110221000001 has 24 divisors (see below), whose sum is σ = 1647683954280. Its totient is φ = 719841897216.

The previous prime is 1110220999969. The next prime is 1110221000017. The reversal of 1110221000001 is 1000001220111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1835265600 + 1108385734401 = 42840^2 + 1052799^2 .

It is not a de Polignac number, because 1110221000001 - 2⁵ = 1110220999969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1110221000081) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100255 + ... + 1493483.

It is an arithmetic number, because the mean of its divisors is an integer number (68653498095).

Almost surely, 2^{1110221000001} is an apocalyptic number.

It is an amenable number.

1110221000001 is a deficient number, since it is larger than the sum of its proper divisors (537462954279).

1110221000001 is a wasteful number, since it uses less digits than its factorization.

1110221000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395665 (or 1395662 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1110221000001 its reverse (1000001220111), we get a palindrome (2110222220112).

The spelling of 1110221000001 in words is "one trillion, one hundred ten billion, two hundred twenty-one million, one", and thus it is an aban number.