42344222121 has 16 divisors (see below), whose sum is σ = 62735513920. Its totient is φ = 28227981600.

The previous prime is 42344222083. The next prime is 42344222131. The reversal of 42344222121 is 12122244324.

It is a happy number.

42344222121 is a `hidden beast` number, since 4 + 2 + 3 + 442 + 2 + 212 + 1 = 666.

It is not a de Polignac number, because 42344222121 - 2⁷ = 42344221993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42344222131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 748221 + ... + 802821.

It is an arithmetic number, because the mean of its divisors is an integer number (3920969620).

Almost surely, 2^42344222121 is an apocalyptic number.

It is an amenable number.

42344222121 is a deficient number, since it is larger than the sum of its proper divisors (20391291799).

42344222121 is a wasteful number, since it uses less digits than its factorization.

42344222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83333 (or 83327 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

Adding to 42344222121 its reverse (12122244324), we get a palindrome (54466466445).

The spelling of 42344222121 in words is "forty-two billion, three hundred forty-four million, two hundred twenty-two thousand, one hundred twenty-one".