20022022222220 has 72 divisors (see below), whose sum is σ = 43255825900224. Its totient is φ = 7784636544000.

The previous prime is 20022022222217. The next prime is 20022022222231. The reversal of 20022022222220 is 2222222022002.

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 = 20022022222192 and 20022022222201.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8012240 + ... + 10209800.

Almost surely, 2^{20022022222220} is an apocalyptic number.

20022022222220 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 20022022222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21627912950112).

20022022222220 is an abundant number, since it is smaller than the sum of its proper divisors (23233803678004).

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

20022022222220 is a wasteful number, since it uses less digits than its factorization.

20022022222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197923 (or 2197880 counting only the distinct ones).

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

Adding to 20022022222220 its reverse (2222222022002), we get a palindrome (22244244244222).

The spelling of 20022022222220 in words is "twenty trillion, twenty-two billion, twenty-two million, two hundred twenty-two thousand, two hundred twenty".