202110211021 has 8 divisors (see below), whose sum is σ = 203199284288. Its totient is φ = 201023208000.

The previous prime is 202110211007. The next prime is 202110211073. The reversal of 202110211021 is 120112011202.

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 202110211021 - 2²³ = 202101822413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202110210992 and 202110211010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202110211421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321585 + ... + 712486.

It is an arithmetic number, because the mean of its divisors is an integer number (25399910536).

Almost surely, 2^202110211021 is an apocalyptic number.

It is an amenable number.

202110211021 is a deficient number, since it is larger than the sum of its proper divisors (1089073267).

202110211021 is a wasteful number, since it uses less digits than its factorization.

202110211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035123.

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

Adding to 202110211021 its reverse (120112011202), we get a palindrome (322222222223).

The spelling of 202110211021 in words is "two hundred two billion, one hundred ten million, two hundred eleven thousand, twenty-one".