200121022061 has 2 divisors, whose sum is σ = 200121022062. Its totient is φ = 200121022060.

The previous prime is 200121022021. The next prime is 200121022081. The reversal of 200121022061 is 160220121002.

200121022061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173480580100 + 26640441961 = 416510^2 + 163219^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200121022061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200121022021) 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, 100060511030 + 100060511031.

It is an arithmetic number, because the mean of its divisors is an integer number (100060511031).

Almost surely, 2^200121022061 is an apocalyptic number.

It is an amenable number.

200121022061 is a deficient number, since it is larger than the sum of its proper divisors (1).

200121022061 is an equidigital number, since it uses as much as digits as its factorization.

200121022061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 200121022061 its reverse (160220121002), we get a palindrome (360341143063).

The spelling of 200121022061 in words is "two hundred billion, one hundred twenty-one million, twenty-two thousand, sixty-one".