1122220213 has 4 divisors (see below), whose sum is σ = 1122313248. Its totient is φ = 1122127180.

The previous prime is 1122220207. The next prime is 1122220241. The reversal of 1122220213 is 3120222211.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1122220213 - 2⁹ = 1122219701 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 (1122220013) 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, 25153 + ... + 53638.

It is an arithmetic number, because the mean of its divisors is an integer number (280578312).

Almost surely, 2^1122220213 is an apocalyptic number.

It is an amenable number.

1122220213 is a deficient number, since it is larger than the sum of its proper divisors (93035).

1122220213 is an equidigital number, since it uses as much as digits as its factorization.

1122220213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93034.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1122220213 is about 33499.5554149604. Note that the first 3 decimals coincide. The cubic root of 1122220213 is about 1039.1845842719.

Adding to 1122220213 its reverse (3120222211), we get a palindrome (4242442424).

The spelling of 1122220213 in words is "one billion, one hundred twenty-two million, two hundred twenty thousand, two hundred thirteen".