27221722044 has 24 divisors (see below), whose sum is σ = 69291656448. Its totient is φ = 8249006640.

The previous prime is 27221722043. The next prime is 27221722049. The reversal of 27221722044 is 44022712272.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 27221721996 and 27221722014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27221722043) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 103112452 + ... + 103112715.

It is an arithmetic number, because the mean of its divisors is an integer number (2887152352).

Almost surely, 2^27221722044 is an apocalyptic number.

It is an amenable number.

27221722044 is an abundant number, since it is smaller than the sum of its proper divisors (42069934404).

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

27221722044 is a wasteful number, since it uses less digits than its factorization.

27221722044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206225185 (or 206225183 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 33.

The spelling of 27221722044 in words is "twenty-seven billion, two hundred twenty-one million, seven hundred twenty-two thousand, forty-four".