121220122043 has 2 divisors, whose sum is σ = 121220122044. Its totient is φ = 121220122042.

The previous prime is 121220121983. The next prime is 121220122087. The reversal of 121220122043 is 340221022121.

It is a strong prime.

It is an emirp because it is prime and its reverse (340221022121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121220122043 - 2²⁰ = 121219073467 is a prime.

It is not a weakly prime, because it can be changed into another prime (121220622043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610061021 + 60610061022.

It is an arithmetic number, because the mean of its divisors is an integer number (60610061022).

Almost surely, 2^121220122043 is an apocalyptic number.

121220122043 is a deficient number, since it is larger than the sum of its proper divisors (1).

121220122043 is an equidigital number, since it uses as much as digits as its factorization.

121220122043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 121220122043 its reverse (340221022121), we get a palindrome (461441144164).

The spelling of 121220122043 in words is "one hundred twenty-one billion, two hundred twenty million, one hundred twenty-two thousand, forty-three".