42203011443121 has 4 divisors (see below), whose sum is σ = 42711481460592. Its totient is φ = 41694541425652.

The previous prime is 42203011443091. The next prime is 42203011443199. The reversal of 42203011443121 is 12134411030224.

It is a happy number.

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 42203011443121 - 2¹³ = 42203011434929 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 42203011443121.

It is not an unprimeable number, because it can be changed into a prime (42203011441121) 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, 254235008611 + ... + 254235008776.

It is an arithmetic number, because the mean of its divisors is an integer number (10677870365148).

Almost surely, 2^{42203011443121} is an apocalyptic number.

It is an amenable number.

42203011443121 is a deficient number, since it is larger than the sum of its proper divisors (508470017471).

42203011443121 is an equidigital number, since it uses as much as digits as its factorization.

42203011443121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508470017470.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 42203011443121 its reverse (12134411030224), we get a palindrome (54337422473345).

The spelling of 42203011443121 in words is "forty-two trillion, two hundred three billion, eleven million, four hundred forty-three thousand, one hundred twenty-one".