27221722000 has 160 divisors (see below), whose sum is σ = 72522822528. Its totient is φ = 9800000000.

The previous prime is 27221721997. The next prime is 27221722007. The reversal of 27221722000 is 22712272.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (27221722007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2215875 + ... + 2228125.

Almost surely, 2^27221722000 is an apocalyptic number.

27221722000 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 27221722000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36261411264).

27221722000 is an abundant number, since it is smaller than the sum of its proper divisors (45301100528).

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

27221722000 is a wasteful number, since it uses less digits than its factorization.

27221722000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12386 (or 12370 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 25.

The spelling of 27221722000 in words is "twenty-seven billion, two hundred twenty-one million, seven hundred twenty-two thousand".