12210223500 has 120 divisors (see below), whose sum is σ = 39836212416. Its totient is φ = 3256048800.

The previous prime is 12210223471. The next prime is 12210223507. The reversal of 12210223500 is 532201221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (12210223507) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 110244 + ... + 191243.

Almost surely, 2^12210223500 is an apocalyptic number.

12210223500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12210223500 is an abundant number, since it is smaller than the sum of its proper divisors (27625988916).

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

12210223500 is a wasteful number, since it uses less digits than its factorization.

12210223500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301518 (or 301497 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 12210223500 its reverse (532201221), we get a palindrome (12742424721).

The spelling of 12210223500 in words is "twelve billion, two hundred ten million, two hundred twenty-three thousand, five hundred".