22011222020 has 48 divisors (see below), whose sum is σ = 47740492800. Its totient is φ = 8515858560.

The previous prime is 22011222007. The next prime is 22011222061. The reversal of 22011222020 is 2022211022.

It is a junction number, because it is equal to n+sod(n) for n = 22011221986 and 22011222004.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1274201 + ... + 1291359.

It is an arithmetic number, because the mean of its divisors is an integer number (994593600).

Almost surely, 2^22011222020 is an apocalyptic number.

22011222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22011222020 is an abundant number, since it is smaller than the sum of its proper divisors (25729270780).

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

22011222020 is a wasteful number, since it uses less digits than its factorization.

22011222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19268 (or 19266 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22011222020 its reverse (2022211022), we get a palindrome (24033433042).

It can be divided in two parts, 2201 and 1222020, that added together give a palindrome (1224221).

The spelling of 22011222020 in words is "twenty-two billion, eleven million, two hundred twenty-two thousand, twenty".