42200443121 has 2 divisors, whose sum is σ = 42200443122. Its totient is φ = 42200443120.

The previous prime is 42200443063. The next prime is 42200443139. The reversal of 42200443121 is 12134400224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21560810896 + 20639632225 = 146836^2 + 143665^2 .

It is a cyclic number.

It is not a de Polignac number, because 42200443121 - 2⁶ = 42200443057 is a prime.

It is not a weakly prime, because it can be changed into another prime (42200443151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21100221560 + 21100221561.

It is an arithmetic number, because the mean of its divisors is an integer number (21100221561).

Almost surely, 2^42200443121 is an apocalyptic number.

It is an amenable number.

42200443121 is a deficient number, since it is larger than the sum of its proper divisors (1).

42200443121 is an equidigital number, since it uses as much as digits as its factorization.

42200443121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 42200443121 its reverse (12134400224), we get a palindrome (54334843345).

The spelling of 42200443121 in words is "forty-two billion, two hundred million, four hundred forty-three thousand, one hundred twenty-one".