20011110220 has 24 divisors (see below), whose sum is σ = 42255512208. Its totient is φ = 7960219200.

The previous prime is 20011110211. The next prime is 20011110253. The reversal of 20011110220 is 2201111002.

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 = 20011110197 and 20011110206.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2760346 + ... + 2767585.

It is an arithmetic number, because the mean of its divisors is an integer number (1760646342).

Almost surely, 2^20011110220 is an apocalyptic number.

20011110220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011110220 is an abundant number, since it is smaller than the sum of its proper divisors (22244401988).

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

20011110220 is a wasteful number, since it uses less digits than its factorization.

20011110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5528121 (or 5528119 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20011110220 its reverse (2201111002), we get a palindrome (22212221222).

The spelling of 20011110220 in words is "twenty billion, eleven million, one hundred ten thousand, two hundred twenty".