12100021027 has 2 divisors, whose sum is σ = 12100021028. Its totient is φ = 12100021026.

The previous prime is 12100021019. The next prime is 12100021069. The reversal of 12100021027 is 72012000121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12100021027 - 2³ = 12100021019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12100021027.

It is not a weakly prime, because it can be changed into another prime (12100021007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050010513 + 6050010514.

It is an arithmetic number, because the mean of its divisors is an integer number (6050010514).

Almost surely, 2^12100021027 is an apocalyptic number.

12100021027 is a deficient number, since it is larger than the sum of its proper divisors (1).

12100021027 is an equidigital number, since it uses as much as digits as its factorization.

12100021027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 16.

Adding to 12100021027 its reverse (72012000121), we get a palindrome (84112021148).

The spelling of 12100021027 in words is "twelve billion, one hundred million, twenty-one thousand, twenty-seven".