22020213240020 has 96 divisors (see below), whose sum is σ = 48932206202880. Its totient is φ = 8300717619840.

The previous prime is 22020213239957. The next prime is 22020213240031. The reversal of 22020213240020 is 2004231202022.

It is a super-2 number, since 2×22020213240020² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22020213239974 and 22020213240001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68899109 + ... + 69217971.

It is an arithmetic number, because the mean of its divisors is an integer number (509710481280).

Almost surely, 2^{22020213240020} is an apocalyptic number.

22020213240020 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 22020213240020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24466103101440).

22020213240020 is an abundant number, since it is smaller than the sum of its proper divisors (26911992962860).

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

22020213240020 is a wasteful number, since it uses less digits than its factorization.

22020213240020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319845 (or 319843 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 22020213240020 its reverse (2004231202022), we get a palindrome (24024444442042).

The spelling of 22020213240020 in words is "twenty-two trillion, twenty billion, two hundred thirteen million, two hundred forty thousand, twenty".