12121200210000 has 200 divisors, whose sum is σ = 44718686989504. Its totient is φ = 2770560000000.

The previous prime is 12121200209999. The next prime is 12121200210109. The reversal of 12121200210000 is 1200212121.

It is a tau number, because it is divible by the number of its divisors (200).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 28650001 + ... + 29070000.

Almost surely, 2^{12121200210000} is an apocalyptic number.

12121200210000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12121200210000 is an abundant number, since it is smaller than the sum of its proper divisors (32597486779504).

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

12121200210000 is an equidigital number, since it uses as much as digits as its factorization.

12121200210000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57720039 (or 57720018 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12121200210000 its reverse (1200212121), we get a palindrome (12122400422121).

The spelling of 12121200210000 in words is "twelve trillion, one hundred twenty-one billion, two hundred million, two hundred ten thousand".