12210021212 has 24 divisors (see below), whose sum is σ = 22067724672. Its totient is φ = 5905152000.

The previous prime is 12210021203. The next prime is 12210021323. The reversal of 12210021212 is 21212001221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238712 + ... + 285312.

It is an arithmetic number, because the mean of its divisors is an integer number (919488528).

Almost surely, 2^12210021212 is an apocalyptic number.

It is an amenable number.

12210021212 is a deficient number, since it is larger than the sum of its proper divisors (9857703460).

12210021212 is a wasteful number, since it uses less digits than its factorization.

12210021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48749 (or 48747 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12210021212 its reverse (21212001221), we get a palindrome (33422022433).

The spelling of 12210021212 in words is "twelve billion, two hundred ten million, twenty-one thousand, two hundred twelve".