200120122211509 has 2 divisors, whose sum is σ = 200120122211510. Its totient is φ = 200120122211508.

The previous prime is 200120122211473. The next prime is 200120122211521. The reversal of 200120122211509 is 905112221021002.

It is a happy number.

200120122211509 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., 135894275316900 + 64225846894609 = 11657370^2 + 8014103^2 .

It is a cyclic number.

It is not a de Polignac number, because 200120122211509 - 2¹¹ = 200120122209461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200120122211539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060061105754 + 100060061105755.

It is an arithmetic number, because the mean of its divisors is an integer number (100060061105755).

Almost surely, 2^{200120122211509} is an apocalyptic number.

It is an amenable number.

200120122211509 is a deficient number, since it is larger than the sum of its proper divisors (1).

200120122211509 is an equidigital number, since it uses as much as digits as its factorization.

200120122211509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 28.

The spelling of 200120122211509 in words is "two hundred trillion, one hundred twenty billion, one hundred twenty-two million, two hundred eleven thousand, five hundred nine".