121027427 has 2 divisors, whose sum is σ = 121027428. Its totient is φ = 121027426.

The previous prime is 121027399. The next prime is 121027429. The reversal of 121027427 is 724720121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121027427 - 2¹⁴ = 121011043 is a prime.

Together with 121027429, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 121027396 and 121027405.

It is not a weakly prime, because it can be changed into another prime (121027429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60513713 + 60513714.

It is an arithmetic number, because the mean of its divisors is an integer number (60513714).

Almost surely, 2^121027427 is an apocalyptic number.

121027427 is a deficient number, since it is larger than the sum of its proper divisors (1).

121027427 is an equidigital number, since it uses as much as digits as its factorization.

121027427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 121027427 is about 11001.2466111800. The cubic root of 121027427 is about 494.6461123943.

Adding to 121027427 its reverse (724720121), we get a palindrome (845747548).

The spelling of 121027427 in words is "one hundred twenty-one million, twenty-seven thousand, four hundred twenty-seven".