1122427213 has 4 divisors (see below), whose sum is σ = 1125313020. Its totient is φ = 1119541408.

The previous prime is 1122427183. The next prime is 1122427219. The reversal of 1122427213 is 3127242211.

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 635695369 + 486731844 = 25213^2 + 22062^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122427213 - 2²¹ = 1120330061 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 (1122427219) 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, 1442320 + ... + 1443097.

It is an arithmetic number, because the mean of its divisors is an integer number (281328255).

Almost surely, 2^1122427213 is an apocalyptic number.

It is an amenable number.

1122427213 is a deficient number, since it is larger than the sum of its proper divisors (2885807).

1122427213 is an equidigital number, since it uses as much as digits as its factorization.

1122427213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2885806.

The product of its digits is 1344, while the sum is 25.

The square root of 1122427213 is about 33502.6448657416. The cubic root of 1122427213 is about 1039.2484748766.

Adding to 1122427213 its reverse (3127242211), we get a palindrome (4249669424).

The spelling of 1122427213 in words is "one billion, one hundred twenty-two million, four hundred twenty-seven thousand, two hundred thirteen".