12212481900 has 36 divisors (see below), whose sum is σ = 35334781832. Its totient is φ = 3256661760.

The previous prime is 12212481889. The next prime is 12212481917. The reversal of 12212481900 is 918421221.

It is a happy number.

It is a super-2 number, since 2×12212481900² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20353837 + ... + 20354436.

Almost surely, 2^12212481900 is an apocalyptic number.

12212481900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212481900 is an abundant number, since it is smaller than the sum of its proper divisors (23122299932).

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

12212481900 is a wasteful number, since it uses less digits than its factorization.

12212481900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40708290 (or 40708283 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The spelling of 12212481900 in words is "twelve billion, two hundred twelve million, four hundred eighty-one thousand, nine hundred".