121120021027 has 2 divisors, whose sum is σ = 121120021028. Its totient is φ = 121120021026.

The previous prime is 121120020971. The next prime is 121120021063. The reversal of 121120021027 is 720120021121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121120021027 - 2¹⁹ = 121119496739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121120020995 and 121120021013.

It is not a weakly prime, because it can be changed into another prime (121120021327) 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, 60560010513 + 60560010514.

It is an arithmetic number, because the mean of its divisors is an integer number (60560010514).

Almost surely, 2^121120021027 is an apocalyptic number.

121120021027 is a deficient number, since it is larger than the sum of its proper divisors (1).

121120021027 is an equidigital number, since it uses as much as digits as its factorization.

121120021027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 121120021027 its reverse (720120021121), we get a palindrome (841240042148).

The spelling of 121120021027 in words is "one hundred twenty-one billion, one hundred twenty million, twenty-one thousand, twenty-seven".