1023203221 has 2 divisors, whose sum is σ = 1023203222. Its totient is φ = 1023203220.

The previous prime is 1023203183. The next prime is 1023203263. The reversal of 1023203221 is 1223023201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 681471025 + 341732196 = 26105^2 + 18486^2 .

It is an emirp because it is prime and its reverse (1223023201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1023203221 - 2¹¹ = 1023201173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1023203195 and 1023203204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023203521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511601610 + 511601611.

It is an arithmetic number, because the mean of its divisors is an integer number (511601611).

Almost surely, 2^1023203221 is an apocalyptic number.

It is an amenable number.

1023203221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023203221 is an equidigital number, since it uses as much as digits as its factorization.

1023203221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1023203221 is about 31987.5479053959. The cubic root of 1023203221 is about 1007.6753453531.

Adding to 1023203221 its reverse (1223023201), we get a palindrome (2246226422).

The spelling of 1023203221 in words is "one billion, twenty-three million, two hundred three thousand, two hundred twenty-one".