22103111221 has 16 divisors (see below), whose sum is σ = 24217887600. Its totient is φ = 20079295488.

The previous prime is 22103111213. The next prime is 22103111267. The reversal of 22103111221 is 12211130122.

It can be written as a sum of positive squares in 8 ways, for example, as 8527599025 + 13575512196 = 92345^2 + 116514^2 .

It is a cyclic number.

It is not a de Polignac number, because 22103111221 - 2³ = 22103111213 is a prime.

It is a super-2 number, since 2×22103111221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22103111195 and 22103111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22106111221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2415571 + ... + 2424703.

It is an arithmetic number, because the mean of its divisors is an integer number (1513617975).

Almost surely, 2^22103111221 is an apocalyptic number.

It is an amenable number.

22103111221 is a deficient number, since it is larger than the sum of its proper divisors (2114776379).

22103111221 is a wasteful number, since it uses less digits than its factorization.

22103111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14088.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 22103111221 its reverse (12211130122), we get a palindrome (34314241343).

The spelling of 22103111221 in words is "twenty-two billion, one hundred three million, one hundred eleven thousand, two hundred twenty-one".