200020121011 has 2 divisors, whose sum is σ = 200020121012. Its totient is φ = 200020121010.

The previous prime is 200020121009. The next prime is 200020121027. The reversal of 200020121011 is 110121020002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 200020121011 - 2¹ = 200020121009 is a prime.

Together with 200020121009, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (200020121111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100010060505 + 100010060506.

It is an arithmetic number, because the mean of its divisors is an integer number (100010060506).

Almost surely, 2^200020121011 is an apocalyptic number.

200020121011 is a deficient number, since it is larger than the sum of its proper divisors (1).

200020121011 is an equidigital number, since it uses as much as digits as its factorization.

200020121011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 200020121011 its reverse (110121020002), we get a palindrome (310141141013).

The spelling of 200020121011 in words is "two hundred billion, twenty million, one hundred twenty-one thousand, eleven".