20211001112101 has 16 divisors (see below), whose sum is σ = 21118585985280. Its totient is φ = 19305828178560.

The previous prime is 20211001112089. The next prime is 20211001112129. The reversal of 20211001112101 is 10121110011202.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20211001112101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211001118101) 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, 113396611 + ... + 113574703.

It is an arithmetic number, because the mean of its divisors is an integer number (1319911624080).

Almost surely, 2^{20211001112101} is an apocalyptic number.

It is an amenable number.

20211001112101 is a deficient number, since it is larger than the sum of its proper divisors (907584873179).

20211001112101 is a wasteful number, since it uses less digits than its factorization.

20211001112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184836.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20211001112101 its reverse (10121110011202), we get a palindrome (30332111123303).

The spelling of 20211001112101 in words is "twenty trillion, two hundred eleven billion, one million, one hundred twelve thousand, one hundred one".