22021111012 has 12 divisors (see below), whose sum is σ = 38538030636. Its totient is φ = 11010245120.

The previous prime is 22021111009. The next prime is 22021111027. The reversal of 22021111012 is 21011112022.

It can be written as a sum of positive squares in 2 ways, for example, as 1165129956 + 20855981056 = 34134^2 + 144416^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22021110983 and 22021111001.

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 3 ways as a sum of consecutive naturals, for example, 169368 + ... + 269680.

It is an arithmetic number, because the mean of its divisors is an integer number (3211502553).

Almost surely, 2^22021111012 is an apocalyptic number.

It is an amenable number.

22021111012 is a deficient number, since it is larger than the sum of its proper divisors (16516919624).

22021111012 is a wasteful number, since it uses less digits than its factorization.

22021111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155198 (or 155196 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22021111012 its reverse (21011112022), we get a palindrome (43032223034).

The spelling of 22021111012 in words is "twenty-two billion, twenty-one million, one hundred eleven thousand, twelve".