22103311220 has 24 divisors (see below), whose sum is σ = 46438021224. Its totient is φ = 8837311616.

The previous prime is 22103311201. The next prime is 22103311229. The reversal of 22103311220 is 2211330122.

It can be written as a sum of positive squares in 4 ways, for example, as 16063534564 + 6039776656 = 126742^2 + 77716^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22103311229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205439 + ... + 293958.

It is an arithmetic number, because the mean of its divisors is an integer number (1934917551).

Almost surely, 2^22103311220 is an apocalyptic number.

22103311220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22103311220 is an abundant number, since it is smaller than the sum of its proper divisors (24334710004).

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

22103311220 is a wasteful number, since it uses less digits than its factorization.

22103311220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501619 (or 501617 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 22103311220 its reverse (2211330122), we get a palindrome (24314641342).

The spelling of 22103311220 in words is "twenty-two billion, one hundred three million, three hundred eleven thousand, two hundred twenty".