20120221010010 has 128 divisors (see below), whose sum is σ = 53301732065280. Its totient is φ = 4820097888000.

The previous prime is 20120221010003. The next prime is 20120221010027. The reversal of 20120221010010 is 1001012202102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16854471 + ... + 18008709.

It is an arithmetic number, because the mean of its divisors is an integer number (416419781760).

Almost surely, 2^{20120221010010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20120221010010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26650866032640).

20120221010010 is an abundant number, since it is smaller than the sum of its proper divisors (33181511055270).

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

20120221010010 is a wasteful number, since it uses less digits than its factorization.

20120221010010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154884.

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

Adding to 20120221010010 its reverse (1001012202102), we get a palindrome (21121233212112).

It can be divided in two parts, 201202 and 21010010, that added together give a palindrome (21211212).

The spelling of 20120221010010 in words is "twenty trillion, one hundred twenty billion, two hundred twenty-one million, ten thousand, ten".