27212221272 has 16 divisors (see below), whose sum is σ = 68030553240. Its totient is φ = 9070740416.

The previous prime is 27212221241. The next prime is 27212221277.

27212221272 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27212221277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566921253 + ... + 566921300.

Almost surely, 2^27212221272 is an apocalyptic number.

It is an amenable number.

27212221272 is an abundant number, since it is smaller than the sum of its proper divisors (40818331968).

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

27212221272 is a wasteful number, since it uses less digits than its factorization.

27212221272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133842562 (or 1133842558 counting only the distinct ones).

The product of its digits is 6272, while the sum is 30.

The spelling of 27212221272 in words is "twenty-seven billion, two hundred twelve million, two hundred twenty-one thousand, two hundred seventy-two".