10403230021 has 2 divisors, whose sum is σ = 10403230022. Its totient is φ = 10403230020.

The previous prime is 10403229973. The next prime is 10403230031. The reversal of 10403230021 is 12003230401.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7654325121 + 2748904900 = 87489^2 + 52430^2 .

It is a cyclic number.

It is not a de Polignac number, because 10403230021 - 2¹¹ = 10403227973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10403229977 and 10403230004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10403230031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5201615010 + 5201615011.

It is an arithmetic number, because the mean of its divisors is an integer number (5201615011).

Almost surely, 2^10403230021 is an apocalyptic number.

It is an amenable number.

10403230021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10403230021 is an equidigital number, since it uses as much as digits as its factorization.

10403230021 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 10403230021 its reverse (12003230401), we get a palindrome (22406460422).

The spelling of 10403230021 in words is "ten billion, four hundred three million, two hundred thirty thousand, twenty-one".