42123122201 has 4 divisors (see below), whose sum is σ = 42244514832. Its totient is φ = 42001729572.

The previous prime is 42123122191. The next prime is 42123122203. The reversal of 42123122201 is 10222132124.

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 not a de Polignac number, because 42123122201 - 2²² = 42118927897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42123122203) 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, 60695795 + ... + 60696488.

It is an arithmetic number, because the mean of its divisors is an integer number (10561128708).

Almost surely, 2^42123122201 is an apocalyptic number.

It is an amenable number.

42123122201 is a deficient number, since it is larger than the sum of its proper divisors (121392631).

42123122201 is a wasteful number, since it uses less digits than its factorization.

42123122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121392630.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 42123122201 its reverse (10222132124), we get a palindrome (52345254325).

The spelling of 42123122201 in words is "forty-two billion, one hundred twenty-three million, one hundred twenty-two thousand, two hundred one".