1222022112 has 96 divisors (see below), whose sum is σ = 3271468032. Its totient is φ = 399320064.

The previous prime is 1222022063. The next prime is 1222022119. The reversal of 1222022112 is 2112202221.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 1222022091 and 1222022100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222022119) 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, 2012913 + ... + 2013519.

It is an arithmetic number, because the mean of its divisors is an integer number (34077792).

Almost surely, 2^1222022112 is an apocalyptic number.

1222022112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222022112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1635734016).

1222022112 is an abundant number, since it is smaller than the sum of its proper divisors (2049445920).

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

1222022112 is a wasteful number, since it uses less digits than its factorization.

1222022112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000 (or 992 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1222022112 is about 34957.4328576914. The cubic root of 1222022112 is about 1069.1197558676.

Adding to 1222022112 its reverse (2112202221), we get a palindrome (3334224333).

The spelling of 1222022112 in words is "one billion, two hundred twenty-two million, twenty-two thousand, one hundred twelve".