12210002121 has 8 divisors (see below), whose sum is σ = 16280918784. Its totient is φ = 8139543440.

The previous prime is 12210002107. The next prime is 12210002137. The reversal of 12210002121 is 12120001221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12210002121 - 2¹⁸ = 12209739977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12210002097 and 12210002106.

It is not an unprimeable number, because it can be changed into a prime (12210002141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46521 + ... + 163046.

It is an arithmetic number, because the mean of its divisors is an integer number (2035114848).

Almost surely, 2^12210002121 is an apocalyptic number.

It is an amenable number.

12210002121 is a deficient number, since it is larger than the sum of its proper divisors (4070916663).

12210002121 is a wasteful number, since it uses less digits than its factorization.

12210002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228991.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12210002121 its reverse (12120001221), we get a palindrome (24330003342).

The spelling of 12210002121 in words is "twelve billion, two hundred ten million, two thousand, one hundred twenty-one".