12210105021 has 8 divisors (see below), whose sum is σ = 16313299104. Its totient is φ = 8123490480.

The previous prime is 12210104981. The next prime is 12210105023. The reversal of 12210105021 is 12050101221.

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

It is not a de Polignac number, because 12210105021 - 2²⁶ = 12142996157 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210105023) 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, 4143166 + ... + 4146111.

It is an arithmetic number, because the mean of its divisors is an integer number (2039162388).

Almost surely, 2^12210105021 is an apocalyptic number.

It is an amenable number.

12210105021 is a deficient number, since it is larger than the sum of its proper divisors (4103194083).

12210105021 is an equidigital number, since it uses as much as digits as its factorization.

12210105021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8289771.

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 12210105021 its reverse (12050101221), we get a palindrome (24260206242).

The spelling of 12210105021 in words is "twelve billion, two hundred ten million, one hundred five thousand, twenty-one".