1212332223 has 16 divisors (see below), whose sum is σ = 1629645696. Its totient is φ = 801640800.

The previous prime is 1212332213. The next prime is 1212332249. The reversal of 1212332223 is 3222332121.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1212332223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1212332223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212332213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270148 + ... + 274598.

It is an arithmetic number, because the mean of its divisors is an integer number (101852856).

Almost surely, 2^1212332223 is an apocalyptic number.

1212332223 is a deficient number, since it is larger than the sum of its proper divisors (417313473).

1212332223 is a wasteful number, since it uses less digits than its factorization.

1212332223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5174.

The product of its digits is 864, while the sum is 21.

The square root of 1212332223 is about 34818.5614722952. The cubic root of 1212332223 is about 1066.2864315417.

Adding to 1212332223 its reverse (3222332121), we get a palindrome (4434664344).

The spelling of 1212332223 in words is "one billion, two hundred twelve million, three hundred thirty-two thousand, two hundred twenty-three".