20120012210000 has 200 divisors, whose sum is σ = 51809395486464. Its totient is φ = 7540611840000.

The previous prime is 20120012209937. The next prime is 20120012210003. The reversal of 20120012210000 is 1221002102.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120012210003) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 37644635 + ... + 38175365.

Almost surely, 2^{20120012210000} is an apocalyptic number.

20120012210000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20120012210000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25904697743232).

20120012210000 is an abundant number, since it is smaller than the sum of its proper divisors (31689383276464).

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

20120012210000 is a wasteful number, since it uses less digits than its factorization.

20120012210000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530999 (or 530978 counting only the distinct ones).

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

Adding to 20120012210000 its reverse (1221002102), we get a palindrome (20121233212102).

The spelling of 20120012210000 in words is "twenty trillion, one hundred twenty billion, twelve million, two hundred ten thousand".