22221012222212 has 12 divisors (see below), whose sum is σ = 38886843518796. Its totient is φ = 11110485502560.

The previous prime is 22221012222193. The next prime is 22221012222217. The reversal of 22221012222212 is 21222221012222.

It can be written as a sum of positive squares in 2 ways, for example, as 17156279976196 + 5064732246016 = 4142014^2 + 2250496^2 .

It is not an unprimeable number, because it can be changed into a prime (22221012222217) 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, 2583839 + ... + 7149702.

It is an arithmetic number, because the mean of its divisors is an integer number (3240570293233).

Almost surely, 2^{22221012222212} is an apocalyptic number.

It is an amenable number.

22221012222212 is a deficient number, since it is larger than the sum of its proper divisors (16665831296584).

22221012222212 is a wasteful number, since it uses less digits than its factorization.

22221012222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10304278 (or 10304276 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 22221012222212 its reverse (21222221012222), we get a palindrome (43443233234434).

The spelling of 22221012222212 in words is "twenty-two trillion, two hundred twenty-one billion, twelve million, two hundred twenty-two thousand, two hundred twelve".