12213333220 has 24 divisors (see below), whose sum is σ = 27979636608. Its totient is φ = 4441212000.

The previous prime is 12213333211. The next prime is 12213333233. The reversal of 12213333220 is 2233331221.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 12213333191 and 12213333200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27757356 + ... + 27757795.

It is an arithmetic number, because the mean of its divisors is an integer number (1165818192).

Almost surely, 2^12213333220 is an apocalyptic number.

12213333220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12213333220 is an abundant number, since it is smaller than the sum of its proper divisors (15766303388).

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

12213333220 is a wasteful number, since it uses less digits than its factorization.

12213333220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55515171 (or 55515169 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 12213333220 its reverse (2233331221), we get a palindrome (14446664441).

The spelling of 12213333220 in words is "twelve billion, two hundred thirteen million, three hundred thirty-three thousand, two hundred twenty".