2021002102111 has 16 divisors (see below), whose sum is σ = 2118700200960. Its totient is φ = 1925233884000.

The previous prime is 2021002102037. The next prime is 2021002102121. The reversal of 2021002102111 is 1112012001202.

It is a cyclic number.

It is not a de Polignac number, because 2021002102111 - 2¹¹ = 2021002100063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021002102091 and 2021002102100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021002102121) 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, 1248646 + ... + 2366668.

It is an arithmetic number, because the mean of its divisors is an integer number (132418762560).

Almost surely, 2^{2021002102111} is an apocalyptic number.

2021002102111 is a deficient number, since it is larger than the sum of its proper divisors (97698098849).

2021002102111 is a wasteful number, since it uses less digits than its factorization.

2021002102111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118886.

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

Adding to 2021002102111 its reverse (1112012001202), we get a palindrome (3133014103313).

The spelling of 2021002102111 in words is "two trillion, twenty-one billion, two million, one hundred two thousand, one hundred eleven".