20213401404220 has 96 divisors (see below), whose sum is σ = 44034931100160. Its totient is φ = 7787651558400.

The previous prime is 20213401404149. The next prime is 20213401404253. The reversal of 20213401404220 is 2240410431202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89985045 + ... + 90209395.

It is an arithmetic number, because the mean of its divisors is an integer number (458697198960).

Almost surely, 2^{20213401404220} is an apocalyptic number.

20213401404220 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 20213401404220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22017465550080).

20213401404220 is an abundant number, since it is smaller than the sum of its proper divisors (23821529695940).

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

20213401404220 is a wasteful number, since it uses less digits than its factorization.

20213401404220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225623 (or 225621 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 20213401404220 its reverse (2240410431202), we get a palindrome (22453811835422).

The spelling of 20213401404220 in words is "twenty trillion, two hundred thirteen billion, four hundred one million, four hundred four thousand, two hundred twenty".