210021101213 has 16 divisors (see below), whose sum is σ = 261856146816. Its totient is φ = 163645520640.

The previous prime is 210021101207. The next prime is 210021101233. The reversal of 210021101213 is 312101120012.

It is not a de Polignac number, because 210021101213 - 2¹⁰ = 210021100189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210021101233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2245145 + ... + 2336817.

It is an arithmetic number, because the mean of its divisors is an integer number (16366009176).

Almost surely, 2^210021101213 is an apocalyptic number.

It is an amenable number.

210021101213 is a deficient number, since it is larger than the sum of its proper divisors (51835045603).

210021101213 is a wasteful number, since it uses less digits than its factorization.

210021101213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121444.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 210021101213 its reverse (312101120012), we get a palindrome (522122221225).

The spelling of 210021101213 in words is "two hundred ten billion, twenty-one million, one hundred one thousand, two hundred thirteen".