202110211121 has 12 divisors (see below), whose sum is σ = 250117794432. Its totient is φ = 159911374896.

The previous prime is 202110211103. The next prime is 202110211151. The reversal of 202110211121 is 121112011202.

It is not a de Polignac number, because 202110211121 - 2¹⁸ = 202109948977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202110211096 and 202110211105.

It is not an unprimeable number, because it can be changed into a prime (202110211151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85421561 + ... + 85423926.

It is an arithmetic number, because the mean of its divisors is an integer number (20843149536).

Almost surely, 2^202110211121 is an apocalyptic number.

It is an amenable number.

202110211121 is a deficient number, since it is larger than the sum of its proper divisors (48007583311).

202110211121 is a wasteful number, since it uses less digits than its factorization.

202110211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170845520 (or 170845507 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 202110211121 its reverse (121112011202), we get a palindrome (323222222323).

The spelling of 202110211121 in words is "two hundred two billion, one hundred ten million, two hundred eleven thousand, one hundred twenty-one".