2021131122101 has 16 divisors (see below), whose sum is σ = 2501442921600. Its totient is φ = 1590202974528.

The previous prime is 2021131122019. The next prime is 2021131122121. The reversal of 2021131122101 is 1012211311202.

It is a happy number.

It is not a de Polignac number, because 2021131122101 - 2¹⁴ = 2021131105717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2021131122101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021131122121) 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, 62023466 + ... + 62056043.

It is an arithmetic number, because the mean of its divisors is an integer number (156340182600).

Almost surely, 2^{2021131122101} is an apocalyptic number.

It is an amenable number.

2021131122101 is a deficient number, since it is larger than the sum of its proper divisors (480311799499).

2021131122101 is a wasteful number, since it uses less digits than its factorization.

2021131122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124079708.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 2021131122101 its reverse (1012211311202), we get a palindrome (3033342433303).

The spelling of 2021131122101 in words is "two trillion, twenty-one billion, one hundred thirty-one million, one hundred twenty-two thousand, one hundred one".