1220012223 has 32 divisors (see below), whose sum is σ = 1743759360. Its totient is φ = 757034880.

The previous prime is 1220012221. The next prime is 1220012273. The reversal of 1220012223 is 3222100221.

It is a happy number.

It is not a de Polignac number, because 1220012223 - 2¹ = 1220012221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220012221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 854236 + ... + 855662.

It is an arithmetic number, because the mean of its divisors is an integer number (54492480).

Almost surely, 2^1220012223 is an apocalyptic number.

1220012223 is a deficient number, since it is larger than the sum of its proper divisors (523747137).

1220012223 is a wasteful number, since it uses less digits than its factorization.

1220012223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1220012223 is about 34928.6733644437. The cubic root of 1220012223 is about 1068.5332986175.

Adding to 1220012223 its reverse (3222100221), we get a palindrome (4442112444).

The spelling of 1220012223 in words is "one billion, two hundred twenty million, twelve thousand, two hundred twenty-three".