20022202222220 has 96 divisors (see below), whose sum is σ = 46198801668096. Its totient is φ = 7228534060800.

The previous prime is 20022202222213. The next prime is 20022202222229. The reversal of 20022202222220 is 2222220222002.

It is a super-4 number, since 4×20022202222220⁴ (a number of 54 digits) contains 4444 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 = 20022202222192 and 20022202222201.

It is not an unprimeable number, because it can be changed into a prime (20022202222229) 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, 42283289 + ... + 42754191.

It is an arithmetic number, because the mean of its divisors is an integer number (481237517376).

Almost surely, 2^{20022202222220} is an apocalyptic number.

20022202222220 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 20022202222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23099400834048).

20022202222220 is an abundant number, since it is smaller than the sum of its proper divisors (26176599445876).

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

20022202222220 is a wasteful number, since it uses less digits than its factorization.

20022202222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472311 (or 472309 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20022202222220 its reverse (2222220222002), we get a palindrome (22244422444222).

The spelling of 20022202222220 in words is "twenty trillion, twenty-two billion, two hundred two million, two hundred twenty-two thousand, two hundred twenty".