2021012111101 has 32 divisors (see below), whose sum is σ = 2269828915200. Its totient is φ = 1790280138240.

The previous prime is 2021012111033. The next prime is 2021012111141. The reversal of 2021012111101 is 1011112101202.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-2021012111101 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 (2021012111141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17173581 + ... + 17290861.

It is an arithmetic number, because the mean of its divisors is an integer number (70932153600).

Almost surely, 2^{2021012111101} is an apocalyptic number.

It is an amenable number.

2021012111101 is a deficient number, since it is larger than the sum of its proper divisors (248816804099).

2021012111101 is a wasteful number, since it uses less digits than its factorization.

2021012111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118209.

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

Adding to 2021012111101 its reverse (1011112101202), we get a palindrome (3032124212303).

The spelling of 2021012111101 in words is "two trillion, twenty-one billion, twelve million, one hundred eleven thousand, one hundred one".