22103211220 has 12 divisors (see below), whose sum is σ = 46416743604. Its totient is φ = 8841284480.

The previous prime is 22103211161. The next prime is 22103211223. The reversal of 22103211220 is 2211230122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4474807236 + 17628403984 = 66894^2 + 132772^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22103211194 and 22103211203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22103211223) 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 3 ways as a sum of consecutive naturals, for example, 552580261 + ... + 552580300.

It is an arithmetic number, because the mean of its divisors is an integer number (3868061967).

Almost surely, 2^22103211220 is an apocalyptic number.

22103211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22103211220 is an abundant number, since it is smaller than the sum of its proper divisors (24313532384).

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

22103211220 is a wasteful number, since it uses less digits than its factorization.

22103211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105160570 (or 1105160568 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22103211220 its reverse (2211230122), we get a palindrome (24314441342).

The spelling of 22103211220 in words is "twenty-two billion, one hundred three million, two hundred eleven thousand, two hundred twenty".