10203243113221 has 4 divisors (see below), whose sum is σ = 10203249513600. Its totient is φ = 10203236712844.

The previous prime is 10203243113213. The next prime is 10203243113263. The reversal of 10203243113221 is 12231134230201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 10203243113221 - 2³ = 10203243113213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10203243113201) 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, 1307820 + ... + 4702858.

It is an arithmetic number, because the mean of its divisors is an integer number (2550812378400).

Almost surely, 2^{10203243113221} is an apocalyptic number.

It is an amenable number.

10203243113221 is a deficient number, since it is larger than the sum of its proper divisors (6400379).

10203243113221 is an equidigital number, since it uses as much as digits as its factorization.

10203243113221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6400378.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 10203243113221 its reverse (12231134230201), we get a palindrome (22434377343422).

The spelling of 10203243113221 in words is "ten trillion, two hundred three billion, two hundred forty-three million, one hundred thirteen thousand, two hundred twenty-one".