121410042121 has 2 divisors, whose sum is σ = 121410042122. Its totient is φ = 121410042120.

The previous prime is 121410042107. The next prime is 121410042139. The reversal of 121410042121 is 121240014121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119415169225 + 1994872896 = 345565^2 + 44664^2 .

It is a cyclic number.

It is not a de Polignac number, because 121410042121 - 2³¹ = 119262558473 is a prime.

It is not a weakly prime, because it can be changed into another prime (121410042421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60705021060 + 60705021061.

It is an arithmetic number, because the mean of its divisors is an integer number (60705021061).

Almost surely, 2^121410042121 is an apocalyptic number.

It is an amenable number.

121410042121 is a deficient number, since it is larger than the sum of its proper divisors (1).

121410042121 is an equidigital number, since it uses as much as digits as its factorization.

121410042121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121410042121 its reverse (121240014121), we get a palindrome (242650056242).

The spelling of 121410042121 in words is "one hundred twenty-one billion, four hundred ten million, forty-two thousand, one hundred twenty-one".