22200132420 has 144 divisors (see below), whose sum is σ = 68474427840. Its totient is φ = 5820680448.

The previous prime is 22200132379. The next prime is 22200132433. The reversal of 22200132420 is 2423100222.

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 = 22200132393 and 22200132402.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7873771 + ... + 7876589.

It is an arithmetic number, because the mean of its divisors is an integer number (475516860).

Almost surely, 2^22200132420 is an apocalyptic number.

22200132420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22200132420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34237213920).

22200132420 is an abundant number, since it is smaller than the sum of its proper divisors (46274295420).

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

22200132420 is a wasteful number, since it uses less digits than its factorization.

22200132420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3554 (or 3549 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 22200132420 its reverse (2423100222), we get a palindrome (24623232642).

The spelling of 22200132420 in words is "twenty-two billion, two hundred million, one hundred thirty-two thousand, four hundred twenty".