22011331320 has 96 divisors (see below), whose sum is σ = 78040188720. Its totient is φ = 5336079360.

The previous prime is 22011331301. The next prime is 22011331327. The reversal of 22011331320 is 2313311022.

22011331320 is a `hidden beast` number, since 2 + 2 + 0 + 11 + 331 + 320 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22011331293 and 22011331302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011331327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2775249 + ... + 2783168.

Almost surely, 2^22011331320 is an apocalyptic number.

22011331320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22011331320 is an abundant number, since it is smaller than the sum of its proper divisors (56028857400).

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

22011331320 is a wasteful number, since it uses less digits than its factorization.

22011331320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5558445 (or 5558438 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 22011331320 its reverse (2313311022), we get a palindrome (24324642342).

The spelling of 22011331320 in words is "twenty-two billion, eleven million, three hundred thirty-one thousand, three hundred twenty".