1021326223 has 2 divisors, whose sum is σ = 1021326224. Its totient is φ = 1021326222.

The previous prime is 1021326211. The next prime is 1021326259. The reversal of 1021326223 is 3226231201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021326223 is a prime.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 1021326194 and 1021326203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021326203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510663111 + 510663112.

It is an arithmetic number, because the mean of its divisors is an integer number (510663112).

Almost surely, 2^1021326223 is an apocalyptic number.

1021326223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021326223 is an equidigital number, since it uses as much as digits as its factorization.

1021326223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1021326223 is about 31958.1949271232. The cubic root of 1021326223 is about 1007.0587971442.

Adding to 1021326223 its reverse (3226231201), we get a palindrome (4247557424).

The spelling of 1021326223 in words is "one billion, twenty-one million, three hundred twenty-six thousand, two hundred twenty-three".