12210121204 has 6 divisors (see below), whose sum is σ = 21367712114. Its totient is φ = 6105060600.

The previous prime is 12210121199. The next prime is 12210121229. The reversal of 12210121204 is 40212101221.

It can be written as a sum of positive squares in only one way, i.e., 11631622500 + 578498704 = 107850^2 + 24052^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1526265147 + ... + 1526265154.

Almost surely, 2^12210121204 is an apocalyptic number.

It is an amenable number.

12210121204 is a deficient number, since it is larger than the sum of its proper divisors (9157590910).

12210121204 is a wasteful number, since it uses less digits than its factorization.

12210121204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3052530305 (or 3052530303 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12210121204 its reverse (40212101221), we get a palindrome (52422222425).

The spelling of 12210121204 in words is "twelve billion, two hundred ten million, one hundred twenty-one thousand, two hundred four".