10221210010205 has 4 divisors (see below), whose sum is σ = 12265452012252. Its totient is φ = 8176968008160.

The previous prime is 10221210010181. The next prime is 10221210010337. The reversal of 10221210010205 is 50201001212201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6069807835204 + 4151402175001 = 2463698^2 + 2037499^2 .

It is not a de Polignac number, because 10221210010205 - 2⁸ = 10221210009949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1022121001016 + ... + 1022121001025.

It is an arithmetic number, because the mean of its divisors is an integer number (3066363003063).

Almost surely, 2^{10221210010205} is an apocalyptic number.

It is an amenable number.

10221210010205 is a deficient number, since it is larger than the sum of its proper divisors (2044242002047).

10221210010205 is an equidigital number, since it uses as much as digits as its factorization.

10221210010205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2044242002046.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 10221210010205 its reverse (50201001212201), we get a palindrome (60422211222406).

The spelling of 10221210010205 in words is "ten trillion, two hundred twenty-one billion, two hundred ten million, ten thousand, two hundred five".