10103212320221 has 4 divisors (see below), whose sum is σ = 10103394281244. Its totient is φ = 10103030359200.

The previous prime is 10103212320181. The next prime is 10103212320233. The reversal of 10103212320221 is 12202321230101.

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 4820707663321 + 5282504656900 = 2195611^2 + 2298370^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10103212320221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10103212320193 and 10103212320202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10103212320821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90897200 + ... + 91008281.

It is an arithmetic number, because the mean of its divisors is an integer number (2525848570311).

Almost surely, 2^{10103212320221} is an apocalyptic number.

It is an amenable number.

10103212320221 is a deficient number, since it is larger than the sum of its proper divisors (181961023).

10103212320221 is an equidigital number, since it uses as much as digits as its factorization.

10103212320221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181961022.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 10103212320221 its reverse (12202321230101), we get a palindrome (22305533550322).

The spelling of 10103212320221 in words is "ten trillion, one hundred three billion, two hundred twelve million, three hundred twenty thousand, two hundred twenty-one".