200105250534221 has 2 divisors, whose sum is σ = 200105250534222. Its totient is φ = 200105250534220.

The previous prime is 200105250534191. The next prime is 200105250534239. The reversal of 200105250534221 is 122435052501002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173106938454121 + 26998312080100 = 13157011^2 + 5195990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200105250534221 is a prime.

It is a super-2 number, since 2×200105250534221² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200105250534421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100052625267110 + 100052625267111.

It is an arithmetic number, because the mean of its divisors is an integer number (100052625267111).

Almost surely, 2^{200105250534221} is an apocalyptic number.

It is an amenable number.

200105250534221 is a deficient number, since it is larger than the sum of its proper divisors (1).

200105250534221 is an equidigital number, since it uses as much as digits as its factorization.

200105250534221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 200105250534221 in words is "two hundred trillion, one hundred five billion, two hundred fifty million, five hundred thirty-four thousand, two hundred twenty-one".