12222121202 has 16 divisors (see below), whose sum is σ = 20255588352. Its totient is φ = 5501517120.

The previous prime is 12222121199. The next prime is 12222121217. The reversal of 12222121202 is 20212122221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

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, 7813874 + ... + 7815437.

It is an arithmetic number, because the mean of its divisors is an integer number (1265974272).

Almost surely, 2^12222121202 is an apocalyptic number.

12222121202 is a deficient number, since it is larger than the sum of its proper divisors (8033467150).

12222121202 is a wasteful number, since it uses less digits than its factorization.

12222121202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15629353.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12222121202 its reverse (20212122221), we get a palindrome (32434243423).

The spelling of 12222121202 in words is "twelve billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred two".