200100122231221 has 2 divisors, whose sum is σ = 200100122231222. Its totient is φ = 200100122231220.

The previous prime is 200100122231117. The next prime is 200100122231231. The reversal of 200100122231221 is 122132221001002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118933987130596 + 81166135100625 = 10905686^2 + 9009225^2 .

It is a cyclic number.

It is not a de Polignac number, because 200100122231221 - 2²¹ = 200100120134069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200100122231231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100050061115610 + 100050061115611.

It is an arithmetic number, because the mean of its divisors is an integer number (100050061115611).

Almost surely, 2^{200100122231221} is an apocalyptic number.

It is an amenable number.

200100122231221 is a deficient number, since it is larger than the sum of its proper divisors (1).

200100122231221 is an equidigital number, since it uses as much as digits as its factorization.

200100122231221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 200100122231221 its reverse (122132221001002), we get a palindrome (322232343232223).

The spelling of 200100122231221 in words is "two hundred trillion, one hundred billion, one hundred twenty-two million, two hundred thirty-one thousand, two hundred twenty-one".