12212120004 has 24 divisors (see below), whose sum is σ = 32565653568. Its totient is φ = 3489177120.

The previous prime is 12212120003. The next prime is 12212120033. The reversal of 12212120004 is 40002121221.

It is not an unprimeable number, because it can be changed into a prime (12212120003) 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, 72691107 + ... + 72691274.

It is an arithmetic number, because the mean of its divisors is an integer number (1356902232).

Almost surely, 2^12212120004 is an apocalyptic number.

12212120004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12212120004 is an abundant number, since it is smaller than the sum of its proper divisors (20353533564).

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

12212120004 is a wasteful number, since it uses less digits than its factorization.

12212120004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145382395 (or 145382393 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12212120004 its reverse (40002121221), we get a palindrome (52214241225).

The spelling of 12212120004 in words is "twelve billion, two hundred twelve million, one hundred twenty thousand, four".