20010121200201 has 48 divisors (see below), whose sum is σ = 31212083270592. Its totient is φ = 11354832445440.

The previous prime is 20010121200161. The next prime is 20010121200203. The reversal of 20010121200201 is 10200212101002.

It is not a de Polignac number, because 20010121200201 - 2⁶ = 20010121200137 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20010121200203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7209531 + ... + 9591536.

It is an arithmetic number, because the mean of its divisors is an integer number (650251734804).

Almost surely, 2^{20010121200201} is an apocalyptic number.

It is an amenable number.

20010121200201 is a deficient number, since it is larger than the sum of its proper divisors (11201962070391).

20010121200201 is a wasteful number, since it uses less digits than its factorization.

20010121200201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16801302 (or 16801291 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20010121200201 its reverse (10200212101002), we get a palindrome (30210333301203).

The spelling of 20010121200201 in words is "twenty trillion, ten billion, one hundred twenty-one million, two hundred thousand, two hundred one".