42234022221 has 4 divisors (see below), whose sum is σ = 56312029632. Its totient is φ = 28156014812.

The previous prime is 42234022211. The next prime is 42234022241. The reversal of 42234022221 is 12222043224.

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 not a de Polignac number, because 42234022221 - 2⁵ = 42234022189 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42234022191 and 42234022200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42234022211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7039003701 + ... + 7039003706.

It is an arithmetic number, because the mean of its divisors is an integer number (14078007408).

Almost surely, 2^42234022221 is an apocalyptic number.

It is an amenable number.

42234022221 is a deficient number, since it is larger than the sum of its proper divisors (14078007411).

42234022221 is a wasteful number, since it uses less digits than its factorization.

42234022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14078007410.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 42234022221 its reverse (12222043224), we get a palindrome (54456065445).

The spelling of 42234022221 in words is "forty-two billion, two hundred thirty-four million, twenty-two thousand, two hundred twenty-one".