121210027 has 2 divisors, whose sum is σ = 121210028. Its totient is φ = 121210026.

The previous prime is 121210021. The next prime is 121210049. The reversal of 121210027 is 720012121.

It is a weak prime.

It is an emirp because it is prime and its reverse (720012121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121210027 is a prime.

It is not a weakly prime, because it can be changed into another prime (121210021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605013 + 60605014.

It is an arithmetic number, because the mean of its divisors is an integer number (60605014).

Almost surely, 2^121210027 is an apocalyptic number.

121210027 is a deficient number, since it is larger than the sum of its proper divisors (1).

121210027 is an equidigital number, since it uses as much as digits as its factorization.

121210027 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.

The square root of 121210027 is about 11009.5425427217. The cubic root of 121210027 is about 494.8947529870.

Adding to 121210027 its reverse (720012121), we get a palindrome (841222148).

The spelling of 121210027 in words is "one hundred twenty-one million, two hundred ten thousand, twenty-seven".