1232221211 has 4 divisors (see below), whose sum is σ = 1327007472. Its totient is φ = 1137434952.

The previous prime is 1232221181. The next prime is 1232221219. The reversal of 1232221211 is 1121222321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1121222321 = 97 ⋅11558993.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1232221211 is a prime.

It is a super-2 number, since 2×1232221211² = 3036738225676613042, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1232221211.

It is not an unprimeable number, because it can be changed into a prime (1232221219) 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, 47393111 + ... + 47393136.

It is an arithmetic number, because the mean of its divisors is an integer number (331751868).

Almost surely, 2^1232221211 is an apocalyptic number.

1232221211 is a deficient number, since it is larger than the sum of its proper divisors (94786261).

1232221211 is an equidigital number, since it uses as much as digits as its factorization.

1232221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94786260.

The product of its digits is 96, while the sum is 17.

The square root of 1232221211 is about 35103.0085747646. The cubic root of 1232221211 is about 1072.0858404172.

Adding to 1232221211 its reverse (1121222321), we get a palindrome (2353443532).

It can be divided in two parts, 12322 and 21211, that added together give a palindrome (33533).

The spelling of 1232221211 in words is "one billion, two hundred thirty-two million, two hundred twenty-one thousand, two hundred eleven".