202101020002111 has 4 divisors (see below), whose sum is σ = 210888020871792. Its totient is φ = 193314019132432.

The previous prime is 202101020002087. The next prime is 202101020002213. The reversal of 202101020002111 is 111200020101202.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 202101020002111 - 2⁷ = 202101020001983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202101020002091 and 202101020002100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202101020005111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4393500434806 + ... + 4393500434851.

It is an arithmetic number, because the mean of its divisors is an integer number (52722005217948).

Almost surely, 2^{202101020002111} is an apocalyptic number.

202101020002111 is a deficient number, since it is larger than the sum of its proper divisors (8787000869681).

202101020002111 is an equidigital number, since it uses as much as digits as its factorization.

202101020002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8787000869680.

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

Adding to 202101020002111 its reverse (111200020101202), we get a palindrome (313301040103313).

Subtracting from 202101020002111 its reverse (111200020101202), we obtain a palindrome (90900999900909).

The spelling of 202101020002111 in words is "two hundred two trillion, one hundred one billion, twenty million, two thousand, one hundred eleven".