22120023220 has 48 divisors (see below), whose sum is σ = 48792860928. Its totient is φ = 8407238400.

The previous prime is 22120023203. The next prime is 22120023293. The reversal of 22120023220 is 2232002122.

It is a junction number, because it is equal to n+sod(n) for n = 22120023194 and 22120023203.

It is a congruent number.

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, 89769 + ... + 228688.

It is an arithmetic number, because the mean of its divisors is an integer number (1016517936).

Almost surely, 2^22120023220 is an apocalyptic number.

22120023220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22120023220 is an abundant number, since it is smaller than the sum of its proper divisors (26672837708).

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

22120023220 is a wasteful number, since it uses less digits than its factorization.

22120023220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318640 (or 318638 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 22120023220 its reverse (2232002122), we get a palindrome (24352025342).

The spelling of 22120023220 in words is "twenty-two billion, one hundred twenty million, twenty-three thousand, two hundred twenty".