20001231334122 has 16 divisors (see below), whose sum is σ = 40376317460832. Its totient is φ = 6604767979280.

The previous prime is 20001231334099. The next prime is 20001231334129. The reversal of 20001231334122 is 22143313210002.

It is a junction number, because it is equal to n+sod(n) for n = 20001231334092 and 20001231334101.

It is not an unprimeable number, because it can be changed into a prime (20001231334129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15577282329 + ... + 15577283612.

It is an arithmetic number, because the mean of its divisors is an integer number (2523519841302).

Almost surely, 2^{20001231334122} is an apocalyptic number.

20001231334122 is an abundant number, since it is smaller than the sum of its proper divisors (20375086126710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20001231334122 is a wasteful number, since it uses less digits than its factorization.

20001231334122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31154566053.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20001231334122 its reverse (22143313210002), we get a palindrome (42144544544124).

The spelling of 20001231334122 in words is "twenty trillion, one billion, two hundred thirty-one million, three hundred thirty-four thousand, one hundred twenty-two".