1222212202112 has 128 divisors (see below), whose sum is σ = 2744925606720. Its totient is φ = 537255936000.

The previous prime is 1222212202097. The next prime is 1222212202117. The reversal of 1222212202112 is 2112022122221.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (1222212202117) 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, 6015008 + ... + 6214880.

Almost surely, 2^{1222212202112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222212202112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1372462803360).

1222212202112 is an abundant number, since it is smaller than the sum of its proper divisors (1522713404608).

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

1222212202112 is a wasteful number, since it uses less digits than its factorization.

1222212202112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200042 (or 200030 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1222212202112 its reverse (2112022122221), we get a palindrome (3334234324333).

The spelling of 1222212202112 in words is "one trillion, two hundred twenty-two billion, two hundred twelve million, two hundred two thousand, one hundred twelve".