1100221201999 has 4 divisors (see below), whose sum is σ = 1100489618200. Its totient is φ = 1099952785800.

The previous prime is 1100221201951. The next prime is 1100221202021. The reversal of 1100221201999 is 9991021220011.

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

It is a cyclic number.

It is not a de Polignac number, because 1100221201999 - 2⁹ = 1100221201487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100221201099) 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, 134201952 + ... + 134210149.

It is an arithmetic number, because the mean of its divisors is an integer number (275122404550).

Almost surely, 2^{1100221201999} is an apocalyptic number.

1100221201999 is a deficient number, since it is larger than the sum of its proper divisors (268416201).

1100221201999 is an equidigital number, since it uses as much as digits as its factorization.

1100221201999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268416200.

The product of its (nonzero) digits is 5832, while the sum is 37.

The spelling of 1100221201999 in words is "one trillion, one hundred billion, two hundred twenty-one million, two hundred one thousand, nine hundred ninety-nine".