42442200002021 has 4 divisors (see below), whose sum is σ = 42442650043872. Its totient is φ = 42441749960172.

The previous prime is 42442200002003. The next prime is 42442200002131. The reversal of 42442200002021 is 12020000224424.

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 a de Polignac number, because none of the positive numbers 2^k-42442200002021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42442200004021) 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, 224879435 + ... + 225068088.

It is an arithmetic number, because the mean of its divisors is an integer number (10610662510968).

Almost surely, 2^{42442200002021} is an apocalyptic number.

It is an amenable number.

42442200002021 is a deficient number, since it is larger than the sum of its proper divisors (450041851).

42442200002021 is an equidigital number, since it uses as much as digits as its factorization.

42442200002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450041850.

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 42442200002021 its reverse (12020000224424), we get a palindrome (54462200226445).

The spelling of 42442200002021 in words is "forty-two trillion, four hundred forty-two billion, two hundred million, two thousand, twenty-one".