12201212122 has 16 divisors (see below), whose sum is σ = 20013285600. Its totient is φ = 5532765040.

The previous prime is 12201212113. The next prime is 12201212129. The reversal of 12201212122 is 22121210221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12201212096 and 12201212105.

It is not an unprimeable number, because it can be changed into a prime (12201212129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 652597 + ... + 671032.

It is an arithmetic number, because the mean of its divisors is an integer number (1250830350).

Almost surely, 2^12201212122 is an apocalyptic number.

12201212122 is a deficient number, since it is larger than the sum of its proper divisors (7812073478).

12201212122 is a wasteful number, since it uses less digits than its factorization.

12201212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324061.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12201212122 its reverse (22121210221), we get a palindrome (34322422343).

The spelling of 12201212122 in words is "twelve billion, two hundred one million, two hundred twelve thousand, one hundred twenty-two".