1433220121 has 2 divisors, whose sum is σ = 1433220122. Its totient is φ = 1433220120.

The previous prime is 1433220101. The next prime is 1433220203. The reversal of 1433220121 is 1210223341.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1211805721 + 221414400 = 34811^2 + 14880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1433220121 is a prime.

It is not a weakly prime, because it can be changed into another prime (1433220101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 716610060 + 716610061.

It is an arithmetic number, because the mean of its divisors is an integer number (716610061).

Almost surely, 2^1433220121 is an apocalyptic number.

It is an amenable number.

1433220121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1433220121 is an equidigital number, since it uses as much as digits as its factorization.

1433220121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1433220121 is about 37857.8937739542. The cubic root of 1433220121 is about 1127.4681930644.

Adding to 1433220121 its reverse (1210223341), we get a palindrome (2643443462).

It can be divided in two parts, 1433220 and 121, that added together give a palindrome (1433341).

The spelling of 1433220121 in words is "one billion, four hundred thirty-three million, two hundred twenty thousand, one hundred twenty-one".