20123201221201 has 8 divisors (see below), whose sum is σ = 22038447231360. Its totient is φ = 18260427704592.

The previous prime is 20123201221199. The next prime is 20123201221241. The reversal of 20123201221201 is 10212210232102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20123201221201 - 2¹ = 20123201221199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20123201221241) 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, 13118122585 + ... + 13118124118.

It is an arithmetic number, because the mean of its divisors is an integer number (2754805903920).

Almost surely, 2^{20123201221201} is an apocalyptic number.

It is an amenable number.

20123201221201 is a deficient number, since it is larger than the sum of its proper divisors (1915246010159).

20123201221201 is a wasteful number, since it uses less digits than its factorization.

20123201221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26236246775.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20123201221201 its reverse (10212210232102), we get a palindrome (30335411453303).

The spelling of 20123201221201 in words is "twenty trillion, one hundred twenty-three billion, two hundred one million, two hundred twenty-one thousand, two hundred one".