2021021110101 has 48 divisors (see below), whose sum is σ = 3112479262592. Its totient is φ = 1142687174400.

The previous prime is 2021021110099. The next prime is 2021021110111. The reversal of 2021021110101 is 1010111201202.

It is not a de Polignac number, because 2021021110101 - 2¹ = 2021021110099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021021110111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 599174451 + ... + 599177823.

Almost surely, 2^{2021021110101} is an apocalyptic number.

2021021110101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2021021110101 is a deficient number, since it is larger than the sum of its proper divisors (1091458152491).

2021021110101 is a wasteful number, since it uses less digits than its factorization.

2021021110101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6382 (or 6281 counting only the distinct ones).

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

Adding to 2021021110101 its reverse (1010111201202), we get a palindrome (3031132311303).

The spelling of 2021021110101 in words is "two trillion, twenty-one billion, twenty-one million, one hundred ten thousand, one hundred one".