20010020220 has 96 divisors (see below), whose sum is σ = 62701497600. Its totient is φ = 5297596992.

The previous prime is 20010020179. The next prime is 20010020227. The reversal of 20010020220 is 2202001002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010020227) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 58234 + ... + 208353.

It is an arithmetic number, because the mean of its divisors is an integer number (653140600).

Almost surely, 2^20010020220 is an apocalyptic number.

20010020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20010020220 is an abundant number, since it is smaller than the sum of its proper divisors (42691477380).

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

20010020220 is a wasteful number, since it uses less digits than its factorization.

20010020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266744 (or 266736 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20010020220 its reverse (2202001002), we get a palindrome (22212021222).

The spelling of 20010020220 in words is "twenty billion, ten million, twenty thousand, two hundred twenty".