10203223021 has 2 divisors, whose sum is σ = 10203223022. Its totient is φ = 10203223020.

The previous prime is 10203222961. The next prime is 10203223031. The reversal of 10203223021 is 12032230201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10203222121 + 900 = 101011^2 + 30^2 .

It is a cyclic number.

It is not a de Polignac number, because 10203223021 - 2⁷ = 10203222893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10203222986 and 10203223004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10203223031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101611510 + 5101611511.

It is an arithmetic number, because the mean of its divisors is an integer number (5101611511).

Almost surely, 2^10203223021 is an apocalyptic number.

It is an amenable number.

10203223021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10203223021 is an equidigital number, since it uses as much as digits as its factorization.

10203223021 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.

Adding to 10203223021 its reverse (12032230201), we get a palindrome (22235453222).

The spelling of 10203223021 in words is "ten billion, two hundred three million, two hundred twenty-three thousand, twenty-one".