2021021112001 has 16 divisors (see below), whose sum is σ = 2043221557248. Its totient is φ = 1998927579600.

The previous prime is 2021021111981. The next prime is 2021021112041. The reversal of 2021021112001 is 1002111201202.

It is not a de Polignac number, because 2021021112001 - 2⁵ = 2021021111969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021021112041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61280446 + ... + 61313416.

It is an arithmetic number, because the mean of its divisors is an integer number (127701347328).

Almost surely, 2^{2021021112001} is an apocalyptic number.

It is an amenable number.

2021021112001 is a deficient number, since it is larger than the sum of its proper divisors (22200445247).

2021021112001 is a wasteful number, since it uses less digits than its factorization.

2021021112001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34572.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2021021112001 its reverse (1002111201202), we get a palindrome (3023132313203).

The spelling of 2021021112001 in words is "two trillion, twenty-one billion, twenty-one million, one hundred twelve thousand, one".