210021230013 has 32 divisors (see below), whose sum is σ = 320491987200. Its totient is φ = 119839927296.

The previous prime is 210021230009. The next prime is 210021230033. The reversal of 210021230013 is 310032120012.

It is not a de Polignac number, because 210021230013 - 2² = 210021230009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210021229974 and 210021230001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210021230033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75302023 + ... + 75304811.

It is an arithmetic number, because the mean of its divisors is an integer number (10015374600).

Almost surely, 2^210021230013 is an apocalyptic number.

It is an amenable number.

210021230013 is a deficient number, since it is larger than the sum of its proper divisors (110470757187).

210021230013 is a wasteful number, since it uses less digits than its factorization.

210021230013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6661.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 210021230013 its reverse (310032120012), we get a palindrome (520053350025).

The spelling of 210021230013 in words is "two hundred ten billion, twenty-one million, two hundred thirty thousand, thirteen".