42113223411421 has 2 divisors, whose sum is σ = 42113223411422. Its totient is φ = 42113223411420.

The previous prime is 42113223411403. The next prime is 42113223411487. The reversal of 42113223411421 is 12411432231124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36871005622500 + 5242217788921 = 6072150^2 + 2289589^2 .

It is a cyclic number.

It is not a de Polignac number, because 42113223411421 - 2¹⁹ = 42113222887133 is a prime.

It is a super-2 number, since 2×42113223411421² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42113224411421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21056611705710 + 21056611705711.

It is an arithmetic number, because the mean of its divisors is an integer number (21056611705711).

Almost surely, 2^{42113223411421} is an apocalyptic number.

It is an amenable number.

42113223411421 is a deficient number, since it is larger than the sum of its proper divisors (1).

42113223411421 is an equidigital number, since it uses as much as digits as its factorization.

42113223411421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 31.

Adding to 42113223411421 its reverse (12411432231124), we get a palindrome (54524655642545).

The spelling of 42113223411421 in words is "forty-two trillion, one hundred thirteen billion, two hundred twenty-three million, four hundred eleven thousand, four hundred twenty-one".