1100120100221 has 4 divisors (see below), whose sum is σ = 1123526910912. Its totient is φ = 1076713289532.

The previous prime is 1100120100179. The next prime is 1100120100223. The reversal of 1100120100221 is 1220010210011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1100120100221 - 2¹⁴ = 1100120083837 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 (1100120100223) 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, 11703405275 + ... + 11703405368.

It is an arithmetic number, because the mean of its divisors is an integer number (280881727728).

Almost surely, 2^{1100120100221} is an apocalyptic number.

It is an amenable number.

1100120100221 is a deficient number, since it is larger than the sum of its proper divisors (23406810691).

1100120100221 is an equidigital number, since it uses as much as digits as its factorization.

1100120100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23406810690.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1100120100221 its reverse (1220010210011), we get a palindrome (2320130310232).

The spelling of 1100120100221 in words is "one trillion, one hundred billion, one hundred twenty million, one hundred thousand, two hundred twenty-one".