42333402221 has 4 divisors (see below), whose sum is σ = 46181893344. Its totient is φ = 38484911100.

The previous prime is 42333402203. The next prime is 42333402277. The reversal of 42333402221 is 12220433324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42333402221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42333402521) 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 3 ways as a sum of consecutive naturals, for example, 1924245545 + ... + 1924245566.

It is an arithmetic number, because the mean of its divisors is an integer number (11545473336).

Almost surely, 2^42333402221 is an apocalyptic number.

It is an amenable number.

42333402221 is a deficient number, since it is larger than the sum of its proper divisors (3848491123).

42333402221 is a wasteful number, since it uses less digits than its factorization.

42333402221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3848491122.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 42333402221 its reverse (12220433324), we get a palindrome (54553835545).

The spelling of 42333402221 in words is "forty-two billion, three hundred thirty-three million, four hundred two thousand, two hundred twenty-one".