121420200061 has 2 divisors, whose sum is σ = 121420200062. Its totient is φ = 121420200060.

The previous prime is 121420200007. The next prime is 121420200071. The reversal of 121420200061 is 160002024121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95484708036 + 25935492025 = 309006^2 + 161045^2 .

It is an emirp because it is prime and its reverse (160002024121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121420200061 - 2³³ = 112830265469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121420200071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60710100030 + 60710100031.

It is an arithmetic number, because the mean of its divisors is an integer number (60710100031).

Almost surely, 2^121420200061 is an apocalyptic number.

It is an amenable number.

121420200061 is a deficient number, since it is larger than the sum of its proper divisors (1).

121420200061 is an equidigital number, since it uses as much as digits as its factorization.

121420200061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 121420200061 its reverse (160002024121), we get a palindrome (281422224182).

The spelling of 121420200061 in words is "one hundred twenty-one billion, four hundred twenty million, two hundred thousand, sixty-one".