1220211223 has 8 divisors (see below), whose sum is σ = 1521302400. Its totient is φ = 950813880.

The previous prime is 1220211211. The next prime is 1220211229. The reversal of 1220211223 is 3221120221.

It is a happy number.

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 1220211223 - 2⁵ = 1220211191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220211197 and 1220211206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220211229) 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, 7923373 + ... + 7923526.

It is an arithmetic number, because the mean of its divisors is an integer number (190162800).

Almost surely, 2^1220211223 is an apocalyptic number.

1220211223 is a deficient number, since it is larger than the sum of its proper divisors (301091177).

1220211223 is a wasteful number, since it uses less digits than its factorization.

1220211223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15846917.

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

The square root of 1220211223 is about 34931.5219107327. The cubic root of 1220211223 is about 1068.5913927257.

Adding to 1220211223 its reverse (3221120221), we get a palindrome (4441331444).

The spelling of 1220211223 in words is "one billion, two hundred twenty million, two hundred eleven thousand, two hundred twenty-three".