200121222011 has 2 divisors, whose sum is σ = 200121222012. Its totient is φ = 200121222010.

The previous prime is 200121221987. The next prime is 200121222017. The reversal of 200121222011 is 110222121002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200121222011 is a prime.

It is not a weakly prime, because it can be changed into another prime (200121222017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060611005 + 100060611006.

It is an arithmetic number, because the mean of its divisors is an integer number (100060611006).

Almost surely, 2^200121222011 is an apocalyptic number.

200121222011 is a deficient number, since it is larger than the sum of its proper divisors (1).

200121222011 is an equidigital number, since it uses as much as digits as its factorization.

200121222011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 200121222011 its reverse (110222121002), we get a palindrome (310343343013).

The spelling of 200121222011 in words is "two hundred billion, one hundred twenty-one million, two hundred twenty-two thousand, eleven".