12210001200 has 90 divisors (see below), whose sum is σ = 42372108324. Its totient is φ = 3255999360.

The previous prime is 12210001189. The next prime is 12210001211. The reversal of 12210001200 is 210001221.

It is an interprime number because it is at equal distance from previous prime (12210001189) and next prime (12210001211).

It is a tau number, because it is divible by the number of its divisors (90).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1692234 + ... + 1699433.

Almost surely, 2^12210001200 is an apocalyptic number.

12210001200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12210001200 is an abundant number, since it is smaller than the sum of its proper divisors (30162107124).

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

12210001200 is a wasteful number, since it uses less digits than its factorization.

12210001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3391691 (or 3391677 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 12210001200 its reverse (210001221), we get a palindrome (12420002421).

The spelling of 12210001200 in words is "twelve billion, two hundred ten million, one thousand, two hundred".