22001286180 has 96 divisors (see below), whose sum is σ = 64619347968. Its totient is φ = 5582473600.

The previous prime is 22001286169. The next prime is 22001286199. The reversal of 22001286180 is 8168210022.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 221845 + ... + 305315.

It is an arithmetic number, because the mean of its divisors is an integer number (673118208).

Almost surely, 2^22001286180 is an apocalyptic number.

22001286180 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 22001286180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32309673984).

22001286180 is an abundant number, since it is smaller than the sum of its proper divisors (42618061788).

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

22001286180 is a wasteful number, since it uses less digits than its factorization.

22001286180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83697 (or 83695 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The spelling of 22001286180 in words is "twenty-two billion, one million, two hundred eighty-six thousand, one hundred eighty".