21272022882 has 72 divisors (see below), whose sum is σ = 51152617152. Its totient is φ = 6383417040.

The previous prime is 21272022853. The next prime is 21272022883. The reversal of 21272022882 is 28822027212.

It is not an unprimeable number, because it can be changed into a prime (21272022883) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 176923 + ... + 271745.

It is an arithmetic number, because the mean of its divisors is an integer number (710453016).

Almost surely, 2^21272022882 is an apocalyptic number.

21272022882 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 21272022882, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25576308576).

21272022882 is an abundant number, since it is smaller than the sum of its proper divisors (29880594270).

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

21272022882 is a wasteful number, since it uses less digits than its factorization.

21272022882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94956 (or 94942 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The spelling of 21272022882 in words is "twenty-one billion, two hundred seventy-two million, twenty-two thousand, eight hundred eighty-two".