12212321430 has 32 divisors (see below), whose sum is σ = 29312573184. Its totient is φ = 3256285536.

The previous prime is 12212321389. The next prime is 12212321479. The reversal of 12212321430 is 3412321221.

It is a junction number, because it is equal to n+sod(n) for n = 12212321397 and 12212321406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 455169 + ... + 481251.

It is an arithmetic number, because the mean of its divisors is an integer number (916017912).

Almost surely, 2^12212321430 is an apocalyptic number.

12212321430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12212321430 is an abundant number, since it is smaller than the sum of its proper divisors (17100251754).

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

12212321430 is a wasteful number, since it uses less digits than its factorization.

12212321430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41700.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 12212321430 its reverse (3412321221), we get a palindrome (15624642651).

The spelling of 12212321430 in words is "twelve billion, two hundred twelve million, three hundred twenty-one thousand, four hundred thirty".