42333001221 has 32 divisors (see below), whose sum is σ = 65211489280. Its totient is φ = 23926565376.

The previous prime is 42333001201. The next prime is 42333001223. The reversal of 42333001221 is 12210033324.

It is not a de Polignac number, because 42333001221 - 2¹⁷ = 42332870149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42333001223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4042290 + ... + 4052748.

It is an arithmetic number, because the mean of its divisors is an integer number (2037859040).

Almost surely, 2^42333001221 is an apocalyptic number.

It is an amenable number.

42333001221 is a deficient number, since it is larger than the sum of its proper divisors (22878488059).

42333001221 is a wasteful number, since it uses less digits than its factorization.

42333001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12553.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 42333001221 its reverse (12210033324), we get a palindrome (54543034545).

The spelling of 42333001221 in words is "forty-two billion, three hundred thirty-three million, one thousand, two hundred twenty-one".