222120001012 has 96 divisors (see below), whose sum is σ = 489811150080. Its totient is φ = 85799070720.

The previous prime is 222120001009. The next prime is 222120001039. The reversal of 222120001012 is 210100021222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 222120000983 and 222120001001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3005439 + ... + 3078457.

It is an arithmetic number, because the mean of its divisors is an integer number (5102199480).

Almost surely, 2^222120001012 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 222120001012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244905575040).

222120001012 is an abundant number, since it is smaller than the sum of its proper divisors (267691149068).

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

222120001012 is a wasteful number, since it uses less digits than its factorization.

222120001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73241 (or 73239 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 222120001012 its reverse (210100021222), we get a palindrome (432220022234).

The spelling of 222120001012 in words is "two hundred twenty-two billion, one hundred twenty million, one thousand, twelve".