210021202222021 has 8 divisors (see below), whose sum is σ = 217264288262400. Its totient is φ = 202778181222960.

The previous prime is 210021202222019. The next prime is 210021202222031. The reversal of 210021202222021 is 120222202120012.

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 210021202222021 - 2¹ = 210021202222019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210021202222021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210021202222031) 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, 9645265 + ... + 22651126.

It is an arithmetic number, because the mean of its divisors is an integer number (27158036032800).

Almost surely, 2^{210021202222021} is an apocalyptic number.

It is an amenable number.

210021202222021 is a deficient number, since it is larger than the sum of its proper divisors (7243086040379).

210021202222021 is a wasteful number, since it uses less digits than its factorization.

210021202222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32520659.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 210021202222021 its reverse (120222202120012), we get a palindrome (330243404342033).

The spelling of 210021202222021 in words is "two hundred ten trillion, twenty-one billion, two hundred two million, two hundred twenty-two thousand, twenty-one".