1222110012 has 12 divisors (see below), whose sum is σ = 2851590056. Its totient is φ = 407370000.

The previous prime is 1222109989. The next prime is 1222110017. The reversal of 1222110012 is 2100112221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 101842501 = 1222110012 / (1 + 2 + 2 + 2 + 1 + 1 + 0 + 0 + 1 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 1222110012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222110017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50921239 + ... + 50921262.

Almost surely, 2^1222110012 is an apocalyptic number.

1222110012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222110012 is an abundant number, since it is smaller than the sum of its proper divisors (1629480044).

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

1222110012 is a wasteful number, since it uses less digits than its factorization.

1222110012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101842508 (or 101842506 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1222110012 is about 34958.6900784340. The cubic root of 1222110012 is about 1069.1453891663.

Adding to 1222110012 its reverse (2100112221), we get a palindrome (3322222233).

The spelling of 1222110012 in words is "one billion, two hundred twenty-two million, one hundred ten thousand, twelve".