210144140120020 has 96 divisors (see below), whose sum is σ = 475514423717760. Its totient is φ = 77717677178880.

The previous prime is 210144140119999. The next prime is 210144140120029. The reversal of 210144140120020 is 20021041441012.

It is a junction number, because it is equal to n+sod(n) for n = 210144140119973 and 210144140120000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210144140120029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24955060 + ... + 32296180.

It is an arithmetic number, because the mean of its divisors is an integer number (4953275247060).

Almost surely, 2^{210144140120020} is an apocalyptic number.

210144140120020 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 210144140120020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237757211858880).

210144140120020 is an abundant number, since it is smaller than the sum of its proper divisors (265370283597740).

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

210144140120020 is a wasteful number, since it uses less digits than its factorization.

210144140120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7342633 (or 7342631 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 210144140120020 its reverse (20021041441012), we get a palindrome (230165181561032).

The spelling of 210144140120020 in words is "two hundred ten trillion, one hundred forty-four billion, one hundred forty million, one hundred twenty thousand, twenty".