12221000022200 has 48 divisors (see below), whose sum is σ = 28417906636080. Its totient is φ = 4887697800960.

The previous prime is 12221000022197. The next prime is 12221000022251. The reversal of 12221000022200 is 222000012221.

It is a super-2 number, since 2×12221000022200² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2991917 + ... + 5778716.

It is an arithmetic number, because the mean of its divisors is an integer number (592039721585).

Almost surely, 2^{12221000022200} is an apocalyptic number.

12221000022200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221000022200 is an abundant number, since it is smaller than the sum of its proper divisors (16196906613880).

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

12221000022200 is a wasteful number, since it uses less digits than its factorization.

12221000022200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8777616 (or 8777607 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 12221000022200 its reverse (222000012221), we get a palindrome (12443000034421).

The spelling of 12221000022200 in words is "twelve trillion, two hundred twenty-one billion, twenty-two thousand, two hundred".