1110101221 has 4 divisors (see below), whose sum is σ = 1110323200. Its totient is φ = 1109879244.

The previous prime is 1110101203. The next prime is 1110101261. The reversal of 1110101221 is 1221010111.

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 1110101221 - 2⁷ = 1110101093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1110101198 and 1110101207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110101261) 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, 103311 + ... + 113548.

It is an arithmetic number, because the mean of its divisors is an integer number (277580800).

Almost surely, 2^1110101221 is an apocalyptic number.

It is an amenable number.

1110101221 is a deficient number, since it is larger than the sum of its proper divisors (221979).

1110101221 is an equidigital number, since it uses as much as digits as its factorization.

1110101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221978.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 1110101221 is about 33318.1815380131. The cubic root of 1110101221 is about 1035.4302771952.

Adding to 1110101221 its reverse (1221010111), we get a palindrome (2331111332).

The spelling of 1110101221 in words is "one billion, one hundred ten million, one hundred one thousand, two hundred twenty-one".