22011020 has 24 divisors (see below), whose sum is σ = 46342464. Its totient is φ = 8781696.

The previous prime is 22011001. The next prime is 22011037. The reversal of 22011020 is 2011022.

It is a junction number, because it is equal to n+sod(n) for n = 22010989 and 22011007.

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, 8072 + ... + 10448.

It is an arithmetic number, because the mean of its divisors is an integer number (1930936).

Almost surely, 2^22011020 is an apocalyptic number.

22011020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22011020 is an abundant number, since it is smaller than the sum of its proper divisors (24331444).

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

22011020 is a wasteful number, since it uses less digits than its factorization.

22011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2849 (or 2847 counting only the distinct ones).

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

The square root of 22011020 is about 4691.5903486984. The cubic root of 22011020 is about 280.2507108217.

Adding to 22011020 its reverse (2011022), we get a palindrome (24022042).

The spelling of 22011020 in words is "twenty-two million, eleven thousand, twenty".