20120010220 has 96 divisors (see below), whose sum is σ = 44237749248. Its totient is φ = 7679308032.

The previous prime is 20120010217. The next prime is 20120010227. The reversal of 20120010220 is 2201002102.

It is a super-2 number, since 2×20120010220² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20120010197 and 20120010206.

It is not an unprimeable number, because it can be changed into a prime (20120010227) 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, 13038769 + ... + 13040311.

It is an arithmetic number, because the mean of its divisors is an integer number (460809888).

Almost surely, 2^20120010220 is an apocalyptic number.

20120010220 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 20120010220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22118874624).

20120010220 is an abundant number, since it is smaller than the sum of its proper divisors (24117739028).

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

20120010220 is a wasteful number, since it uses less digits than its factorization.

20120010220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919 (or 1917 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20120010220 its reverse (2201002102), we get a palindrome (22321012322).

The spelling of 20120010220 in words is "twenty billion, one hundred twenty million, ten thousand, two hundred twenty".