22221012112 has 40 divisors (see below), whose sum is σ = 46398514680. Its totient is φ = 10248437760.

The previous prime is 22221012101. The next prime is 22221012119. The reversal of 22221012112 is 21121012222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 903844096 + 21317168016 = 30064^2 + 146004^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (22221012119) by changing a digit.

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, 255162 + ... + 330982.

It is an arithmetic number, because the mean of its divisors is an integer number (1159962867).

Almost surely, 2^22221012112 is an apocalyptic number.

It is an amenable number.

22221012112 is an abundant number, since it is smaller than the sum of its proper divisors (24177502568).

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

22221012112 is a wasteful number, since it uses less digits than its factorization.

22221012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77251 (or 77245 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22221012112 its reverse (21121012222), we get a palindrome (43342024334).

The spelling of 22221012112 in words is "twenty-two billion, two hundred twenty-one million, twelve thousand, one hundred twelve".