12212321224 has 32 divisors (see below), whose sum is σ = 24036808320. Its totient is φ = 5805686656.

The previous prime is 12212321221. The next prime is 12212321227. The reversal of 12212321224 is 42212321221.

It is an interprime number because it is at equal distance from previous prime (12212321221) and next prime (12212321227).

It is a junction number, because it is equal to n+sod(n) for n = 12212321195 and 12212321204.

It is not an unprimeable number, because it can be changed into a prime (12212321221) 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, 167989 + ... + 229444.

It is an arithmetic number, because the mean of its divisors is an integer number (751150260).

Almost surely, 2^12212321224 is an apocalyptic number.

It is an amenable number.

12212321224 is a deficient number, since it is larger than the sum of its proper divisors (11824487096).

12212321224 is a wasteful number, since it uses less digits than its factorization.

12212321224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397629 (or 397625 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

Adding to 12212321224 its reverse (42212321221), we get a palindrome (54424642445).

The spelling of 12212321224 in words is "twelve billion, two hundred twelve million, three hundred twenty-one thousand, two hundred twenty-four".