27137421212 has 12 divisors (see below), whose sum is σ = 51807804216. Its totient is φ = 12335191440.

The previous prime is 27137421211. The next prime is 27137421253. The reversal of 27137421212 is 21212473172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27137421211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308379743 + ... + 308379830.

It is an arithmetic number, because the mean of its divisors is an integer number (4317317018).

Almost surely, 2^27137421212 is an apocalyptic number.

27137421212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

27137421212 is a deficient number, since it is larger than the sum of its proper divisors (24670383004).

27137421212 is a wasteful number, since it uses less digits than its factorization.

27137421212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616759588 (or 616759586 counting only the distinct ones).

The product of its digits is 9408, while the sum is 32.

Adding to 27137421212 its reverse (21212473172), we get a palindrome (48349894384).

The spelling of 27137421212 in words is "twenty-seven billion, one hundred thirty-seven million, four hundred twenty-one thousand, two hundred twelve".