12220323100 has 36 divisors (see below), whose sum is σ = 27913795000. Its totient is φ = 4630858560.

The previous prime is 12220323091. The next prime is 12220323103. The reversal of 12220323100 is 132302221.

It is a super-2 number, since 2×12220323100² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220323103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3213975 + ... + 3217774.

Almost surely, 2^12220323100 is an apocalyptic number.

12220323100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12220323100 is an abundant number, since it is smaller than the sum of its proper divisors (15693471900).

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

12220323100 is a wasteful number, since it uses less digits than its factorization.

12220323100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6431782 (or 6431775 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12220323100 its reverse (132302221), we get a palindrome (12352625321).

The spelling of 12220323100 in words is "twelve billion, two hundred twenty million, three hundred twenty-three thousand, one hundred".