20211344043220 has 24 divisors (see below), whose sum is σ = 46302351808608. Its totient is φ = 7349579652000.

The previous prime is 20211344043203. The next prime is 20211344043229. The reversal of 20211344043220 is 2234044311202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211344043229) 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, 45934872606 + ... + 45934873045.

It is an arithmetic number, because the mean of its divisors is an integer number (1929264658692).

Almost surely, 2^{20211344043220} is an apocalyptic number.

20211344043220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211344043220 is an abundant number, since it is smaller than the sum of its proper divisors (26091007765388).

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

20211344043220 is a wasteful number, since it uses less digits than its factorization.

20211344043220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91869745671 (or 91869745669 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 20211344043220 its reverse (2234044311202), we get a palindrome (22445388354422).

The spelling of 20211344043220 in words is "twenty trillion, two hundred eleven billion, three hundred forty-four million, forty-three thousand, two hundred twenty".