20121244027 has 2 divisors, whose sum is σ = 20121244028. Its totient is φ = 20121244026.

The previous prime is 20121243917. The next prime is 20121244061. The reversal of 20121244027 is 72044212102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20121244027 - 2⁷ = 20121243899 is a prime.

It is a super-2 number, since 2×20121244027² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20121243992 and 20121244010.

It is not a weakly prime, because it can be changed into another prime (20121244097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060622013 + 10060622014.

It is an arithmetic number, because the mean of its divisors is an integer number (10060622014).

Almost surely, 2^20121244027 is an apocalyptic number.

20121244027 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121244027 is an equidigital number, since it uses as much as digits as its factorization.

20121244027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 25.

Adding to 20121244027 its reverse (72044212102), we get a palindrome (92165456129).

The spelling of 20121244027 in words is "twenty billion, one hundred twenty-one million, two hundred forty-four thousand, twenty-seven".