12220221100 has 36 divisors (see below), whose sum is σ = 26525347408. Its totient is φ = 4886712000.

The previous prime is 12220221043. The next prime is 12220221121. The reversal of 12220221100 is 112202221.

It is a happy 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, 386905 + ... + 417295.

Almost surely, 2^12220221100 is an apocalyptic number.

12220221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12220221100 is an abundant number, since it is smaller than the sum of its proper divisors (14305126308).

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

12220221100 is a wasteful number, since it uses less digits than its factorization.

12220221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34426 (or 34419 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12220221100 its reverse (112202221), we get a palindrome (12332423321).

The spelling of 12220221100 in words is "twelve billion, two hundred twenty million, two hundred twenty-one thousand, one hundred".