121401011 has 2 divisors, whose sum is σ = 121401012. Its totient is φ = 121401010.

The previous prime is 121400957. The next prime is 121401017. The reversal of 121401011 is 110104121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121401011 - 2⁶ = 121400947 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 121400983 and 121401001.

It is not a weakly prime, because it can be changed into another prime (121401017) 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, 60700505 + 60700506.

It is an arithmetic number, because the mean of its divisors is an integer number (60700506).

Almost surely, 2^121401011 is an apocalyptic number.

121401011 is a deficient number, since it is larger than the sum of its proper divisors (1).

121401011 is an equidigital number, since it uses as much as digits as its factorization.

121401011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 121401011 is about 11018.2126953513. The cubic root of 121401011 is about 495.1545427737.

Adding to 121401011 its reverse (110104121), we get a palindrome (231505132).

The spelling of 121401011 in words is "one hundred twenty-one million, four hundred one thousand, eleven".