1102112221 has 4 divisors (see below), whose sum is σ = 1259556832. Its totient is φ = 944667612.

The previous prime is 1102112213. The next prime is 1102112251. The reversal of 1102112221 is 1222112011.

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 not a de Polignac number, because 1102112221 - 2³ = 1102112213 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 (1102112251) 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, 78722295 + ... + 78722308.

It is an arithmetic number, because the mean of its divisors is an integer number (314889208).

Almost surely, 2^1102112221 is an apocalyptic number.

It is an amenable number.

1102112221 is a deficient number, since it is larger than the sum of its proper divisors (157444611).

1102112221 is an equidigital number, since it uses as much as digits as its factorization.

1102112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157444610.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1102112221 is about 33198.0755616948. The cubic root of 1102112221 is about 1032.9404214019.

Adding to 1102112221 its reverse (1222112011), we get a palindrome (2324224232).

The spelling of 1102112221 in words is "one billion, one hundred two million, one hundred twelve thousand, two hundred twenty-one".