1222113113 has 4 divisors (see below), whose sum is σ = 1316121828. Its totient is φ = 1128104400.

The previous prime is 1222113103. The next prime is 1222113127. The reversal of 1222113113 is 3113112221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 524730649 + 697382464 = 22907^2 + 26408^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222113113 - 2⁴ = 1222113097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222113091 and 1222113100.

It is not an unprimeable number, because it can be changed into a prime (1222113103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47004338 + ... + 47004363.

It is an arithmetic number, because the mean of its divisors is an integer number (329030457).

Almost surely, 2^1222113113 is an apocalyptic number.

1222113113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1222113113 is a deficient number, since it is larger than the sum of its proper divisors (94008715).

1222113113 is an equidigital number, since it uses as much as digits as its factorization.

1222113113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94008714.

The product of its digits is 72, while the sum is 17.

The square root of 1222113113 is about 34958.7344307542. The cubic root of 1222113113 is about 1069.1462934540.

Adding to 1222113113 its reverse (3113112221), we get a palindrome (4335225334).

The spelling of 1222113113 in words is "one billion, two hundred twenty-two million, one hundred thirteen thousand, one hundred thirteen".