27221104000 has 128 divisors (see below), whose sum is σ = 67828718880. Its totient is φ = 10864281600.

The previous prime is 27221103983. The next prime is 27221104007. The reversal of 27221104000 is 40112272.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27221104007) 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, 8366374 + ... + 8369626.

Almost surely, 2^27221104000 is an apocalyptic number.

27221104000 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 27221104000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33914359440).

27221104000 is an abundant number, since it is smaller than the sum of its proper divisors (40607614880).

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

27221104000 is an equidigital number, since it uses as much as digits as its factorization.

27221104000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3805 (or 3783 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

Adding to 27221104000 its reverse (40112272), we get a palindrome (27261216272).

The spelling of 27221104000 in words is "twenty-seven billion, two hundred twenty-one million, one hundred four thousand".