12210121203 has 32 divisors (see below), whose sum is σ = 19075929600. Its totient is φ = 6944021280.

The previous prime is 12210121199. The next prime is 12210121229. The reversal of 12210121203 is 30212101221.

It is not a de Polignac number, because 12210121203 - 2² = 12210121199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12210121403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189001 + ... + 245237.

It is an arithmetic number, because the mean of its divisors is an integer number (596122800).

Almost surely, 2^12210121203 is an apocalyptic number.

12210121203 is a deficient number, since it is larger than the sum of its proper divisors (6865808397).

12210121203 is an equidigital number, since it uses as much as digits as its factorization.

12210121203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56472 (or 56458 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12210121203 its reverse (30212101221), we get a palindrome (42422222424).

The spelling of 12210121203 in words is "twelve billion, two hundred ten million, one hundred twenty-one thousand, two hundred three".