12212002000 has 80 divisors (see below), whose sum is σ = 32213098944. Its totient is φ = 4440720000.

The previous prime is 12212001947. The next prime is 12212002009. The reversal of 12212002000 is 20021221.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212002009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255546 + ... + 299545.

Almost surely, 2^12212002000 is an apocalyptic number.

12212002000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212002000 is an abundant number, since it is smaller than the sum of its proper divisors (20001096944).

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

12212002000 is a wasteful number, since it uses less digits than its factorization.

12212002000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555125 (or 555109 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 12212002000 its reverse (20021221), we get a palindrome (12232023221).

The spelling of 12212002000 in words is "twelve billion, two hundred twelve million, two thousand".