1023313203221 has 4 divisors (see below), whose sum is σ = 1024866031200. Its totient is φ = 1021760375244.

The previous prime is 1023313203091. The next prime is 1023313203251. The reversal of 1023313203221 is 1223023133201.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1023313203221 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 (1023313203251) 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, 776413001 + ... + 776414318.

It is an arithmetic number, because the mean of its divisors is an integer number (256216507800).

Almost surely, 2^{1023313203221} is an apocalyptic number.

It is an amenable number.

1023313203221 is a deficient number, since it is larger than the sum of its proper divisors (1552827979).

1023313203221 is an equidigital number, since it uses as much as digits as its factorization.

1023313203221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552827978.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1023313203221 its reverse (1223023133201), we get a palindrome (2246336336422).

The spelling of 1023313203221 in words is "one trillion, twenty-three billion, three hundred thirteen million, two hundred three thousand, two hundred twenty-one".