12121111202 has 16 divisors (see below), whose sum is σ = 18397913400. Its totient is φ = 5988710400.

The previous prime is 12121111157. The next prime is 12121111207. The reversal of 12121111202 is 20211112121.

It can be written as a sum of positive squares in 4 ways, for example, as 12095820361 + 25290841 = 109981^2 + 5029^2 .

It is not an unprimeable number, because it can be changed into a prime (12121111207) 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, 43874 + ... + 161762.

Almost surely, 2^12121111202 is an apocalyptic number.

12121111202 is a deficient number, since it is larger than the sum of its proper divisors (6276802198).

12121111202 is a wasteful number, since it uses less digits than its factorization.

12121111202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118501.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12121111202 its reverse (20211112121), we get a palindrome (32332223323).

The spelling of 12121111202 in words is "twelve billion, one hundred twenty-one million, one hundred eleven thousand, two hundred two".