22011002220 has 24 divisors (see below), whose sum is σ = 61630806384. Its totient is φ = 5869600576.

The previous prime is 22011002213. The next prime is 22011002269. The reversal of 22011002220 is 2220011022.

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 = 22011002196 and 22011002205.

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, 183424959 + ... + 183425078.

It is an arithmetic number, because the mean of its divisors is an integer number (2567950266).

Almost surely, 2^22011002220 is an apocalyptic number.

22011002220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22011002220 is an abundant number, since it is smaller than the sum of its proper divisors (39619804164).

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

22011002220 is a wasteful number, since it uses less digits than its factorization.

22011002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366850049 (or 366850047 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22011002220 its reverse (2220011022), we get a palindrome (24231013242).

The spelling of 22011002220 in words is "twenty-two billion, eleven million, two thousand, two hundred twenty".