2433220021 has 2 divisors, whose sum is σ = 2433220022. Its totient is φ = 2433220020.

The previous prime is 2433219967. The next prime is 2433220057. The reversal of 2433220021 is 1200223342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2392579396 + 40640625 = 48914^2 + 6375^2 .

It is a cyclic number.

It is not a de Polignac number, because 2433220021 - 2¹³ = 2433211829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2433220091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1216610010 + 1216610011.

It is an arithmetic number, because the mean of its divisors is an integer number (1216610011).

Almost surely, 2^2433220021 is an apocalyptic number.

It is an amenable number.

2433220021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2433220021 is an equidigital number, since it uses as much as digits as its factorization.

2433220021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 2433220021 is about 49327.6800691052. The cubic root of 2433220021 is about 1345.0149979671.

Adding to 2433220021 its reverse (1200223342), we get a palindrome (3633443363).

The spelling of 2433220021 in words is "two billion, four hundred thirty-three million, two hundred twenty thousand, twenty-one".