1223213113212 has 24 divisors (see below), whose sum is σ = 2854935221712. Its totient is φ = 407627520000.

The previous prime is 1223213113183. The next prime is 1223213113219. The reversal of 1223213113212 is 2123113123221.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223213113219) 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, 13726789 + ... + 13815612.

It is an arithmetic number, because the mean of its divisors is an integer number (118955634238).

Almost surely, 2^{1223213113212} is an apocalyptic number.

1223213113212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1223213113212 is an abundant number, since it is smaller than the sum of its proper divisors (1631722108500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223213113212 is a wasteful number, since it uses less digits than its factorization.

1223213113212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27546109 (or 27546107 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

Adding to 1223213113212 its reverse (2123113123221), we get a palindrome (3346326236433).

The spelling of 1223213113212 in words is "one trillion, two hundred twenty-three billion, two hundred thirteen million, one hundred thirteen thousand, two hundred twelve".