1013233021 has 2 divisors, whose sum is σ = 1013233022. Its totient is φ = 1013233020.

The previous prime is 1013233009. The next prime is 1013233043. The reversal of 1013233021 is 1203323101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 806276025 + 206956996 = 28395^2 + 14386^2 .

It is a cyclic number.

It is not a de Polignac number, because 1013233021 - 2⁵ = 1013232989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1013232986 and 1013233004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1013233061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506616510 + 506616511.

It is an arithmetic number, because the mean of its divisors is an integer number (506616511).

Almost surely, 2^1013233021 is an apocalyptic number.

It is an amenable number.

1013233021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1013233021 is an equidigital number, since it uses as much as digits as its factorization.

1013233021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1013233021 is about 31831.3213831911. The cubic root of 1013233021 is about 1004.3916918089.

Adding to 1013233021 its reverse (1203323101), we get a palindrome (2216556122).

The spelling of 1013233021 in words is "one billion, thirteen million, two hundred thirty-three thousand, twenty-one".