20121120727 has 2 divisors, whose sum is σ = 20121120728. Its totient is φ = 20121120726.

The previous prime is 20121120713. The next prime is 20121120769. The reversal of 20121120727 is 72702112102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20121120727 - 2³¹ = 17973637079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20121120787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060560363 + 10060560364.

It is an arithmetic number, because the mean of its divisors is an integer number (10060560364).

Almost surely, 2^20121120727 is an apocalyptic number.

20121120727 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121120727 is an equidigital number, since it uses as much as digits as its factorization.

20121120727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 784, while the sum is 25.

Adding to 20121120727 its reverse (72702112102), we get a palindrome (92823232829).

The spelling of 20121120727 in words is "twenty billion, one hundred twenty-one million, one hundred twenty thousand, seven hundred twenty-seven".