200120121109 has 2 divisors, whose sum is σ = 200120121110. Its totient is φ = 200120121108.

The previous prime is 200120121079. The next prime is 200120121119. The reversal of 200120121109 is 901121021002.

It is a happy number.

200120121109 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., 106791704100 + 93328417009 = 326790^2 + 305497^2 .

It is a cyclic number.

It is not a de Polignac number, because 200120121109 - 2¹³ = 200120112917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200120121119) 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, 100060060554 + 100060060555.

It is an arithmetic number, because the mean of its divisors is an integer number (100060060555).

Almost surely, 2^200120121109 is an apocalyptic number.

It is an amenable number.

200120121109 is a deficient number, since it is larger than the sum of its proper divisors (1).

200120121109 is an equidigital number, since it uses as much as digits as its factorization.

200120121109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 200120121109 in words is "two hundred billion, one hundred twenty million, one hundred twenty-one thousand, one hundred nine".