1222212211212 has 48 divisors (see below), whose sum is σ = 2934142696800. Its totient is φ = 395731683840.

The previous prime is 1222212211189. The next prime is 1222212211229. The reversal of 1222212211212 is 2121122122221.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5311287 + ... + 5536622.

It is an arithmetic number, because the mean of its divisors is an integer number (61127972850).

Almost surely, 2^{1222212211212} is an apocalyptic number.

1222212211212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222212211212 is an abundant number, since it is smaller than the sum of its proper divisors (1711930485588).

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

1222212211212 is a wasteful number, since it uses less digits than its factorization.

1222212211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10848186 (or 10848184 counting only the distinct ones).

The product of its digits is 256, while the sum is 21.

Adding to 1222212211212 its reverse (2121122122221), we get a palindrome (3343334333433).

The spelling of 1222212211212 in words is "one trillion, two hundred twenty-two billion, two hundred twelve million, two hundred eleven thousand, two hundred twelve".