20022332220 has 288 divisors, whose sum is σ = 68888339520. Its totient is φ = 4824230400.

The previous prime is 20022332207. The next prime is 20022332249. The reversal of 20022332220 is 2223322002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20022332193 and 20022332202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11825694 + ... + 11827386.

Almost surely, 2^20022332220 is an apocalyptic number.

20022332220 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 20022332220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34444169760).

20022332220 is an abundant number, since it is smaller than the sum of its proper divisors (48866007300).

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

20022332220 is a wasteful number, since it uses less digits than its factorization.

20022332220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1914 (or 1895 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

Adding to 20022332220 its reverse (2223322002), we get a palindrome (22245654222).

The spelling of 20022332220 in words is "twenty billion, twenty-two million, three hundred thirty-two thousand, two hundred twenty".