222340442212 has 24 divisors (see below), whose sum is σ = 444695013504. Its totient is φ = 95285733312.

The previous prime is 222340442201. The next prime is 222340442243. The reversal of 222340442212 is 212244043222.

It is a happy number.

It is a super-2 number, since 2×222340442212² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 924273 + ... + 1139719.

It is an arithmetic number, because the mean of its divisors is an integer number (18528958896).

Almost surely, 2^222340442212 is an apocalyptic number.

It is an amenable number.

222340442212 is an abundant number, since it is smaller than the sum of its proper divisors (222354571292).

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

222340442212 is a wasteful number, since it uses less digits than its factorization.

222340442212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252315 (or 252313 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 222340442212 its reverse (212244043222), we get a palindrome (434584485434).

The spelling of 222340442212 in words is "two hundred twenty-two billion, three hundred forty million, four hundred forty-two thousand, two hundred twelve".