20100120211101 has 16 divisors (see below), whose sum is σ = 30816661082624. Its totient is φ = 11415318049584.

The previous prime is 20100120211069. The next prime is 20100120211147. The reversal of 20100120211101 is 10111202100102.

It is not a de Polignac number, because 20100120211101 - 2⁵ = 20100120211069 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 (20100120211901) 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, 2936035171 + ... + 2936042016.

It is an arithmetic number, because the mean of its divisors is an integer number (1926041317664).

Almost surely, 2^{20100120211101} is an apocalyptic number.

20100120211101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20100120211101 is a deficient number, since it is larger than the sum of its proper divisors (10716540871523).

20100120211101 is a wasteful number, since it uses less digits than its factorization.

20100120211101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5872077360.

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

Adding to 20100120211101 its reverse (10111202100102), we get a palindrome (30211322311203).

The spelling of 20100120211101 in words is "twenty trillion, one hundred billion, one hundred twenty million, two hundred eleven thousand, one hundred one".