200121111131 has 2 divisors, whose sum is σ = 200121111132. Its totient is φ = 200121111130.

The previous prime is 200121111097. The next prime is 200121111143. The reversal of 200121111131 is 131111121002.

200121111131 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 is a cyclic number.

It is not a de Polignac number, because 200121111131 - 2⁶ = 200121111067 is a prime.

It is a super-2 number, since 2×200121111131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (200121111331) 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, 100060555565 + 100060555566.

It is an arithmetic number, because the mean of its divisors is an integer number (100060555566).

Almost surely, 2^200121111131 is an apocalyptic number.

200121111131 is a deficient number, since it is larger than the sum of its proper divisors (1).

200121111131 is an equidigital number, since it uses as much as digits as its factorization.

200121111131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 200121111131 its reverse (131111121002), we get a palindrome (331232232133).

The spelling of 200121111131 in words is "two hundred billion, one hundred twenty-one million, one hundred eleven thousand, one hundred thirty-one".