1223212212032 has 28 divisors (see below), whose sum is σ = 2429902366500. Its totient is φ = 610953348096.

The previous prime is 1223212211999. The next prime is 1223212212041. The reversal of 1223212212032 is 2302122123221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 554703206656 + 668509005376 = 744784^2 + 817624^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1223212211989 and 1223212212007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10138907 + ... + 10258842.

It is an arithmetic number, because the mean of its divisors is an integer number (86782227375).

Almost surely, 2^{1223212212032} is an apocalyptic number.

It is an amenable number.

1223212212032 is a deficient number, since it is larger than the sum of its proper divisors (1206690154468).

1223212212032 is an equidigital number, since it uses as much as digits as its factorization.

1223212212032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20398698 (or 20398688 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1223212212032 its reverse (2302122123221), we get a palindrome (3525334335253).

The spelling of 1223212212032 in words is "one trillion, two hundred twenty-three billion, two hundred twelve million, two hundred twelve thousand, thirty-two".