42110224021 has 2 divisors, whose sum is σ = 42110224022. Its totient is φ = 42110224020.

The previous prime is 42110224003. The next prime is 42110224027. The reversal of 42110224021 is 12042201124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38724729796 + 3385494225 = 196786^2 + 58185^2 .

It is a cyclic number.

It is not a de Polignac number, because 42110224021 - 2⁷ = 42110223893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42110224021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42110224027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21055112010 + 21055112011.

It is an arithmetic number, because the mean of its divisors is an integer number (21055112011).

Almost surely, 2^42110224021 is an apocalyptic number.

It is an amenable number.

42110224021 is a deficient number, since it is larger than the sum of its proper divisors (1).

42110224021 is an equidigital number, since it uses as much as digits as its factorization.

42110224021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 42110224021 its reverse (12042201124), we get a palindrome (54152425145).

The spelling of 42110224021 in words is "forty-two billion, one hundred ten million, two hundred twenty-four thousand, twenty-one".