27272021121 has 12 divisors (see below), whose sum is σ = 39399647248. Its totient is φ = 18178242264.

The previous prime is 27272021113. The next prime is 27272021159. The reversal of 27272021121 is 12112027272.

It is not a de Polignac number, because 27272021121 - 2³ = 27272021113 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27272521121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 202495 + ... + 309108.

Almost surely, 2^27272021121 is an apocalyptic number.

It is an amenable number.

27272021121 is a deficient number, since it is larger than the sum of its proper divisors (12127626127).

27272021121 is a wasteful number, since it uses less digits than its factorization.

27272021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517532 (or 517529 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

Adding to 27272021121 its reverse (12112027272), we get a palindrome (39384048393).

The spelling of 27272021121 in words is "twenty-seven billion, two hundred seventy-two million, twenty-one thousand, one hundred twenty-one".