22220011332 has 18 divisors (see below), whose sum is σ = 56167250958. Its totient is φ = 7406670432.

The previous prime is 22220011283. The next prime is 22220011337. The reversal of 22220011332 is 23311002222.

It can be written as a sum of positive squares in only one way, i.e., 22205768256 + 14243076 = 149016^2 + 3774^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22220011337) 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 5 ways as a sum of consecutive naturals, for example, 308611233 + ... + 308611304.

It is an arithmetic number, because the mean of its divisors is an integer number (3120402831).

Almost surely, 2^22220011332 is an apocalyptic number.

It is an amenable number.

22220011332 is an abundant number, since it is smaller than the sum of its proper divisors (33947239626).

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

22220011332 is a wasteful number, since it uses less digits than its factorization.

22220011332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617222547 (or 617222542 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22220011332 its reverse (23311002222), we get a palindrome (45531013554).

The spelling of 22220011332 in words is "twenty-two billion, two hundred twenty million, eleven thousand, three hundred thirty-two".