1223402211 has 24 divisors (see below), whose sum is σ = 1835854384. Its totient is φ = 814147200.

The previous prime is 1223402203. The next prime is 1223402231. The reversal of 1223402211 is 1122043221.

It is a happy number.

It is not a de Polignac number, because 1223402211 - 2³ = 1223402203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223402231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141855 + ... + 150231.

Almost surely, 2^1223402211 is an apocalyptic number.

1223402211 is a deficient number, since it is larger than the sum of its proper divisors (612452173).

1223402211 is an frugal number, since it uses more digits than its factorization.

1223402211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8993 (or 8981 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1223402211 is about 34977.1669950555. The cubic root of 1223402211 is about 1069.5220770116.

Adding to 1223402211 its reverse (1122043221), we get a palindrome (2345445432).

The spelling of 1223402211 in words is "one billion, two hundred twenty-three million, four hundred two thousand, two hundred eleven".