20201201111001 has 16 divisors (see below), whose sum is σ = 26961906048896. Its totient is φ = 13453983328896.

The previous prime is 20201201110991. The next prime is 20201201111017. The reversal of 20201201111001 is 10011110210202.

It is not a de Polignac number, because 20201201111001 - 2⁵ = 20201201110969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20201201911001) 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, 54964221 + ... + 55330533.

It is an arithmetic number, because the mean of its divisors is an integer number (1685119128056).

Almost surely, 2^{20201201111001} is an apocalyptic number.

It is an amenable number.

20201201111001 is a deficient number, since it is larger than the sum of its proper divisors (6760704937895).

20201201111001 is a wasteful number, since it uses less digits than its factorization.

20201201111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384672.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20201201111001 its reverse (10011110210202), we get a palindrome (30212311321203).

The spelling of 20201201111001 in words is "twenty trillion, two hundred one billion, two hundred one million, one hundred eleven thousand, one".