121200061 has 2 divisors, whose sum is σ = 121200062. Its totient is φ = 121200060.

The previous prime is 121200047. The next prime is 121200073. The reversal of 121200061 is 160002121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90839961 + 30360100 = 9531^2 + 5510^2 .

It is a cyclic number.

It is not a de Polignac number, because 121200061 - 2⁹ = 121199549 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121200011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600030 + 60600031.

It is an arithmetic number, because the mean of its divisors is an integer number (60600031).

Almost surely, 2^121200061 is an apocalyptic number.

It is an amenable number.

121200061 is a deficient number, since it is larger than the sum of its proper divisors (1).

121200061 is an equidigital number, since it uses as much as digits as its factorization.

121200061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 121200061 is about 11009.0899260566. The cubic root of 121200061 is about 494.8811890479.

Adding to 121200061 its reverse (160002121), we get a palindrome (281202182).

The spelling of 121200061 in words is "one hundred twenty-one million, two hundred thousand, sixty-one".