12121203202 has 4 divisors (see below), whose sum is σ = 18181804806. Its totient is φ = 6060601600.

The previous prime is 12121203187. The next prime is 12121203229. The reversal of 12121203202 is 20230212121.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 9824972641 + 2296230561 = 99121^2 + 47919^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3030300799 + ... + 3030300802.

Almost surely, 2^12121203202 is an apocalyptic number.

12121203202 is a deficient number, since it is larger than the sum of its proper divisors (6060601604).

12121203202 is an equidigital number, since it uses as much as digits as its factorization.

12121203202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6060601603.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12121203202 its reverse (20230212121), we get a palindrome (32351415323).

The spelling of 12121203202 in words is "twelve billion, one hundred twenty-one million, two hundred three thousand, two hundred two".