12121022000 has 40 divisors (see below), whose sum is σ = 29308636032. Its totient is φ = 4848408000.

The previous prime is 12121021999. The next prime is 12121022021. The reversal of 12121022000 is 22012121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3028256 + ... + 3032255.

Almost surely, 2^12121022000 is an apocalyptic number.

12121022000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12121022000 is an abundant number, since it is smaller than the sum of its proper divisors (17187614032).

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

12121022000 is an equidigital number, since it uses as much as digits as its factorization.

12121022000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6060534 (or 6060518 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12121022000 its reverse (22012121), we get a palindrome (12143034121).

The spelling of 12121022000 in words is "twelve billion, one hundred twenty-one million, twenty-two thousand".