2012201221120 has 88 divisors (see below), whose sum is σ = 4848191668944. Its totient is φ = 801334296576.

The previous prime is 2012201221117. The next prime is 2012201221127. The reversal of 2012201221120 is 211221022102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 2012201221094 and 2012201221103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012201221127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296584 + ... + 2027896.

Almost surely, 2^{2012201221120} is an apocalyptic number.

2012201221120 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 2012201221120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2424095834472).

2012201221120 is an abundant number, since it is smaller than the sum of its proper divisors (2835990447824).

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

2012201221120 is a wasteful number, since it uses less digits than its factorization.

2012201221120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731565 (or 1731547 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2012201221120 its reverse (211221022102), we get a palindrome (2223422243222).

The spelling of 2012201221120 in words is "two trillion, twelve billion, two hundred one million, two hundred twenty-one thousand, one hundred twenty".