1222221133212 has 24 divisors (see below), whose sum is σ = 2918171389056. Its totient is φ = 397932461808.

The previous prime is 1222221133201. The next prime is 1222221133219. The reversal of 1222221133212 is 2123311222221.

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 (1222221133219) 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 7 ways as a sum of consecutive naturals, for example, 1184322288 + ... + 1184323319.

It is an arithmetic number, because the mean of its divisors is an integer number (121590474544).

Almost surely, 2^{1222221133212} is an apocalyptic number.

1222221133212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222221133212 is an abundant number, since it is smaller than the sum of its proper divisors (1695950255844).

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

1222221133212 is a wasteful number, since it uses less digits than its factorization.

1222221133212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2368645657 (or 2368645655 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

Adding to 1222221133212 its reverse (2123311222221), we get a palindrome (3345532355433).

The spelling of 1222221133212 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-one million, one hundred thirty-three thousand, two hundred twelve".