1113221101 has 4 divisors (see below), whose sum is σ = 1121719104. Its totient is φ = 1104723100.

The previous prime is 1113221093. The next prime is 1113221113. The reversal of 1113221101 is 1011223111.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1011223111 = 19 ⋅53222269.

It is a cyclic number.

It is not a de Polignac number, because 1113221101 - 2³ = 1113221093 is a prime.

It is a super-2 number, since 2×1113221101² = 2478522439423304402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113221171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4248805 + ... + 4249066.

It is an arithmetic number, because the mean of its divisors is an integer number (280429776).

Almost surely, 2^1113221101 is an apocalyptic number.

It is an amenable number.

1113221101 is a deficient number, since it is larger than the sum of its proper divisors (8498003).

1113221101 is an equidigital number, since it uses as much as digits as its factorization.

1113221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8498002.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1113221101 is about 33364.9681702231. The cubic root of 1113221101 is about 1036.3993769982.

Adding to 1113221101 its reverse (1011223111), we get a palindrome (2124444212).

The spelling of 1113221101 in words is "one billion, one hundred thirteen million, two hundred twenty-one thousand, one hundred one".