200121020093 has 2 divisors, whose sum is σ = 200121020094. Its totient is φ = 200121020092.

The previous prime is 200121020089. The next prime is 200121020117. The reversal of 200121020093 is 390020121002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195189890809 + 4931129284 = 441803^2 + 70222^2 .

It is a cyclic number.

It is not a de Polignac number, because 200121020093 - 2² = 200121020089 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200121020023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060510046 + 100060510047.

It is an arithmetic number, because the mean of its divisors is an integer number (100060510047).

Almost surely, 2^200121020093 is an apocalyptic number.

It is an amenable number.

200121020093 is a deficient number, since it is larger than the sum of its proper divisors (1).

200121020093 is an equidigital number, since it uses as much as digits as its factorization.

200121020093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 200121020093 its reverse (390020121002), we get a palindrome (590141141095).

The spelling of 200121020093 in words is "two hundred billion, one hundred twenty-one million, twenty thousand, ninety-three".