12320021210 has 64 divisors (see below), whose sum is σ = 26884493568. Its totient is φ = 3968185344.

The previous prime is 12320021201. The next prime is 12320021213. The reversal of 12320021210 is 1212002321.

It is a happy number.

It is a super-2 number, since 2×12320021210² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (12320021213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 653537 + ... + 672123.

It is an arithmetic number, because the mean of its divisors is an integer number (420070212).

Almost surely, 2^12320021210 is an apocalyptic number.

12320021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12320021210 is an abundant number, since it is smaller than the sum of its proper divisors (14564472358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12320021210 is a wasteful number, since it uses less digits than its factorization.

12320021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19175.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12320021210 its reverse (1212002321), we get a palindrome (13532023531).

The spelling of 12320021210 in words is "twelve billion, three hundred twenty million, twenty-one thousand, two hundred ten".