222238221912 has 224 divisors, whose sum is σ = 716588462880. Its totient is φ = 63267402240.

The previous prime is 222238221889. The next prime is 222238221913. The reversal of 222238221912 is 219122832222.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222238221913) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 11461858 + ... + 11481230.

Almost surely, 2^222238221912 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 222238221912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (358294231440).

222238221912 is an abundant number, since it is smaller than the sum of its proper divisors (494350240968).

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

222238221912 is a wasteful number, since it uses less digits than its factorization.

222238221912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19685 (or 19666 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The spelling of 222238221912 in words is "two hundred twenty-two billion, two hundred thirty-eight million, two hundred twenty-one thousand, nine hundred twelve".