12213424100 has 18 divisors (see below), whose sum is σ = 26503130514. Its totient is φ = 4885369600.

The previous prime is 12213424079. The next prime is 12213424103. The reversal of 12213424100 is 142431221.

It can be written as a sum of positive squares in 3 ways, for example, as 605947456 + 11607476644 = 24616^2 + 107738^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (12213424103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61067021 + ... + 61067220.

Almost surely, 2^12213424100 is an apocalyptic number.

12213424100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12213424100 is an abundant number, since it is smaller than the sum of its proper divisors (14289706414).

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

12213424100 is a wasteful number, since it uses less digits than its factorization.

12213424100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122134255 (or 122134248 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12213424100 its reverse (142431221), we get a palindrome (12355855321).

The spelling of 12213424100 in words is "twelve billion, two hundred thirteen million, four hundred twenty-four thousand, one hundred".