42110111122201 has 4 divisors (see below), whose sum is σ = 42262133184292. Its totient is φ = 41958089060112.

The previous prime is 42110111122141. The next prime is 42110111122231. The reversal of 42110111122201 is 10222111101124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10988886872601 + 31121224249600 = 3314949^2 + 5578640^2 .

It is a cyclic number.

It is not a de Polignac number, because 42110111122201 - 2¹³ = 42110111114009 is a prime.

It is a super-2 number, since 2×42110111122201² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42110111122231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76011030630 + ... + 76011031183.

It is an arithmetic number, because the mean of its divisors is an integer number (10565533296073).

Almost surely, 2^{42110111122201} is an apocalyptic number.

It is an amenable number.

42110111122201 is a deficient number, since it is larger than the sum of its proper divisors (152022062091).

42110111122201 is a wasteful number, since it uses less digits than its factorization.

42110111122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152022062090.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 42110111122201 its reverse (10222111101124), we get a palindrome (52332222223325).

The spelling of 42110111122201 in words is "forty-two trillion, one hundred ten billion, one hundred eleven million, one hundred twenty-two thousand, two hundred one".