13223011220 has 48 divisors (see below), whose sum is σ = 28171272528. Its totient is φ = 5212569600.

The previous prime is 13223011211. The next prime is 13223011237. The reversal of 13223011220 is 2211032231.

It can be written as a sum of positive squares in 8 ways, for example, as 127870864 + 13095140356 = 11308^2 + 114434^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2334632 + ... + 2340288.

It is an arithmetic number, because the mean of its divisors is an integer number (586901511).

Almost surely, 2^13223011220 is an apocalyptic number.

13223011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13223011220 is an abundant number, since it is smaller than the sum of its proper divisors (14948261308).

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

13223011220 is a wasteful number, since it uses less digits than its factorization.

13223011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7340 (or 7338 counting only the distinct ones).

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

Adding to 13223011220 its reverse (2211032231), we get a palindrome (15434043451).

The spelling of 13223011220 in words is "thirteen billion, two hundred twenty-three million, eleven thousand, two hundred twenty".