121000200073 has 2 divisors, whose sum is σ = 121000200074. Its totient is φ = 121000200072.

The previous prime is 121000200067. The next prime is 121000200107. The reversal of 121000200073 is 370002000121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119613605904 + 1386594169 = 345852^2 + 37237^2 .

It is a cyclic number.

It is not a de Polignac number, because 121000200073 - 2²¹ = 120998102921 is a prime.

It is not a weakly prime, because it can be changed into another prime (121000200023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500100036 + 60500100037.

It is an arithmetic number, because the mean of its divisors is an integer number (60500100037).

Almost surely, 2^121000200073 is an apocalyptic number.

It is an amenable number.

121000200073 is a deficient number, since it is larger than the sum of its proper divisors (1).

121000200073 is an equidigital number, since it uses as much as digits as its factorization.

121000200073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 16.

Adding to 121000200073 its reverse (370002000121), we get a palindrome (491002200194).

The spelling of 121000200073 in words is "one hundred twenty-one billion, two hundred thousand, seventy-three".