22122276220 has 48 divisors (see below), whose sum is σ = 51858753408. Its totient is φ = 7857380160.

The previous prime is 22122276199. The next prime is 22122276223. The reversal of 22122276220 is 2267222122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122276223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1159794 + ... + 1178713.

It is an arithmetic number, because the mean of its divisors is an integer number (1080390696).

Almost surely, 2^22122276220 is an apocalyptic number.

22122276220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22122276220 is an abundant number, since it is smaller than the sum of its proper divisors (29736477188).

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

22122276220 is a wasteful number, since it uses less digits than its factorization.

22122276220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2338570 (or 2338568 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

Adding to 22122276220 its reverse (2267222122), we get a palindrome (24389498342).

The spelling of 22122276220 in words is "twenty-two billion, one hundred twenty-two million, two hundred seventy-six thousand, two hundred twenty".