1223011211 has 8 divisors (see below), whose sum is σ = 1249511760. Its totient is φ = 1196794368.

The previous prime is 1223011189. The next prime is 1223011241. The reversal of 1223011211 is 1121103221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1223011211 - 2¹⁴ = 1222994827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223011241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62201 + ... + 79466.

It is an arithmetic number, because the mean of its divisors is an integer number (156188970).

Almost surely, 2^1223011211 is an apocalyptic number.

1223011211 is a deficient number, since it is larger than the sum of its proper divisors (26500549).

1223011211 is an equidigital number, since it uses as much as digits as its factorization.

1223011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141853.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1223011211 is about 34971.5771877678. The cubic root of 1223011211 is about 1069.4081249287.

Adding to 1223011211 its reverse (1121103221), we get a palindrome (2344114432).

The spelling of 1223011211 in words is "one billion, two hundred twenty-three million, eleven thousand, two hundred eleven".