210021220213 has 8 divisors (see below), whose sum is σ = 240027078528. Its totient is φ = 180016068624.

The previous prime is 210021220193. The next prime is 210021220229. The reversal of 210021220213 is 312022120012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 210021220213 - 2¹³ = 210021212021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210021220273) 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, 887295 + ... + 1098787.

It is an arithmetic number, because the mean of its divisors is an integer number (30003384816).

Almost surely, 2^210021220213 is an apocalyptic number.

It is an amenable number.

210021220213 is a deficient number, since it is larger than the sum of its proper divisors (30005858315).

210021220213 is a wasteful number, since it uses less digits than its factorization.

210021220213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353363.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 210021220213 its reverse (312022120012), we get a palindrome (522043340225).

The spelling of 210021220213 in words is "two hundred ten billion, twenty-one million, two hundred twenty thousand, two hundred thirteen".