42221103421 has 4 divisors (see below), whose sum is σ = 48252689632. Its totient is φ = 36189517212.

The previous prime is 42221103401. The next prime is 42221103437. The reversal of 42221103421 is 12430112224.

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 42221103421 - 2⁷ = 42221103293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42221103392 and 42221103401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42221103401) 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, 3015793095 + ... + 3015793108.

It is an arithmetic number, because the mean of its divisors is an integer number (12063172408).

Almost surely, 2^42221103421 is an apocalyptic number.

It is an amenable number.

42221103421 is a deficient number, since it is larger than the sum of its proper divisors (6031586211).

42221103421 is an equidigital number, since it uses as much as digits as its factorization.

42221103421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6031586210.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 42221103421 its reverse (12430112224), we get a palindrome (54651215645).

The spelling of 42221103421 in words is "forty-two billion, two hundred twenty-one million, one hundred three thousand, four hundred twenty-one".