202120102111 has 8 divisors (see below), whose sum is σ = 202750228800. Its totient is φ = 201490810752.

The previous prime is 202120102049. The next prime is 202120102123. The reversal of 202120102111 is 111201021202.

202120102111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 202120102111 - 2²⁵ = 202086547679 is a prime.

It is a super-2 number, since 2×202120102111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202120102091 and 202120102100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202120132111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277611 + ... + 693763.

It is an arithmetic number, because the mean of its divisors is an integer number (25343778600).

Almost surely, 2^202120102111 is an apocalyptic number.

202120102111 is a deficient number, since it is larger than the sum of its proper divisors (630126689).

202120102111 is a wasteful number, since it uses less digits than its factorization.

202120102111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417665.

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

Adding to 202120102111 its reverse (111201021202), we get a palindrome (313321123313).

The spelling of 202120102111 in words is "two hundred two billion, one hundred twenty million, one hundred two thousand, one hundred eleven".