20201100122001 has 16 divisors (see below), whose sum is σ = 27921298290624. Its totient is φ = 12980954453184.

The previous prime is 20201100121897. The next prime is 20201100122089. The reversal of 20201100122001 is 10022100110202.

It is not a de Polignac number, because 20201100122001 - 2¹⁹ = 20201099597713 is a prime.

It is a super-2 number, since 2×20201100122001² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20201100122501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 850417530 + ... + 850441283.

It is an arithmetic number, because the mean of its divisors is an integer number (1745081143164).

Almost surely, 2^{20201100122001} is an apocalyptic number.

It is an amenable number.

20201100122001 is a deficient number, since it is larger than the sum of its proper divisors (7720198168623).

20201100122001 is a wasteful number, since it uses less digits than its factorization.

20201100122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700858960.

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

Adding to 20201100122001 its reverse (10022100110202), we get a palindrome (30223200232203).

The spelling of 20201100122001 in words is "twenty trillion, two hundred one billion, one hundred million, one hundred twenty-two thousand, one".