22161260032 has 40 divisors (see below), whose sum is σ = 44469515376. Its totient is φ = 11033014272.

The previous prime is 22161260021. The next prime is 22161260047. The reversal of 22161260032 is 23006216122.

It is a super-2 number, since 2×22161260032² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22161259979 and 22161260006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26413 + ... + 212179.

Almost surely, 2^22161260032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22161260032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22234757688).

22161260032 is an abundant number, since it is smaller than the sum of its proper divisors (22308255344).

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

22161260032 is an equidigital number, since it uses as much as digits as its factorization.

22161260032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186018 (or 186002 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 22161260032 its reverse (23006216122), we get a palindrome (45167476154).

The spelling of 22161260032 in words is "twenty-two billion, one hundred sixty-one million, two hundred sixty thousand, thirty-two".