20011310220 has 96 divisors (see below), whose sum is σ = 63233291520. Its totient is φ = 4683938560.

The previous prime is 20011310219. The next prime is 20011310257. The reversal of 20011310220 is 2201311002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20011310196 and 20011310205.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 503622 + ... + 541901.

It is an arithmetic number, because the mean of its divisors is an integer number (658680120).

Almost surely, 2^20011310220 is an apocalyptic number.

20011310220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011310220 is an abundant number, since it is smaller than the sum of its proper divisors (43221981300).

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

20011310220 is a wasteful number, since it uses less digits than its factorization.

20011310220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045575 (or 1045573 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20011310220 its reverse (2201311002), we get a palindrome (22212621222).

The spelling of 20011310220 in words is "twenty billion, eleven million, three hundred ten thousand, two hundred twenty".