12101221203 has 4 divisors (see below), whose sum is σ = 16134961608. Its totient is φ = 8067480800.

The previous prime is 12101221199. The next prime is 12101221211. The reversal of 12101221203 is 30212210121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12101221203 - 2² = 12101221199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12101221213) 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 3 ways as a sum of consecutive naturals, for example, 2016870198 + ... + 2016870203.

It is an arithmetic number, because the mean of its divisors is an integer number (4033740402).

Almost surely, 2^12101221203 is an apocalyptic number.

12101221203 is a deficient number, since it is larger than the sum of its proper divisors (4033740405).

12101221203 is an equidigital number, since it uses as much as digits as its factorization.

12101221203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4033740404.

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

Adding to 12101221203 its reverse (30212210121), we get a palindrome (42313431324).

The spelling of 12101221203 in words is "twelve billion, one hundred one million, two hundred twenty-one thousand, two hundred three".