42297109221 has 4 divisors (see below), whose sum is σ = 56396145632. Its totient is φ = 28198072812.

The previous prime is 42297109207. The next prime is 42297109237. The reversal of 42297109221 is 12290179224.

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 not a de Polignac number, because 42297109221 - 2⁷ = 42297109093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42297109221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42297109271) 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, 7049518201 + ... + 7049518206.

It is an arithmetic number, because the mean of its divisors is an integer number (14099036408).

Almost surely, 2^42297109221 is an apocalyptic number.

It is an amenable number.

42297109221 is a deficient number, since it is larger than the sum of its proper divisors (14099036411).

42297109221 is a wasteful number, since it uses less digits than its factorization.

42297109221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14099036410.

The product of its (nonzero) digits is 36288, while the sum is 39.

The spelling of 42297109221 in words is "forty-two billion, two hundred ninety-seven million, one hundred nine thousand, two hundred twenty-one".