2021002021111 has 8 divisors (see below), whose sum is σ = 2023100679600. Its totient is φ = 2018904415680.

The previous prime is 2021002021081. The next prime is 2021002021133. The reversal of 2021002021111 is 1111202001202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2021002021111 - 2⁵ = 2021002021079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021002021091 and 2021002021100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021002021711) 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 7 ways as a sum of consecutive naturals, for example, 3606531 + ... + 4129051.

It is an arithmetic number, because the mean of its divisors is an integer number (252887584950).

Almost surely, 2^{2021002021111} is an apocalyptic number.

2021002021111 is a deficient number, since it is larger than the sum of its proper divisors (2098658489).

2021002021111 is a wasteful number, since it uses less digits than its factorization.

2021002021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526529.

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

Adding to 2021002021111 its reverse (1111202001202), we get a palindrome (3132204022313).

The spelling of 2021002021111 in words is "two trillion, twenty-one billion, two million, twenty-one thousand, one hundred eleven".