20121002202212 has 12 divisors (see below), whose sum is σ = 37283033492460. Its totient is φ = 9468706918656.

The previous prime is 20121002202199. The next prime is 20121002202317. The reversal of 20121002202212 is 21220220012102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18899765032996 + 1221237169216 = 4347386^2 + 1105096^2 .

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147948545537 + ... + 147948545672.

It is an arithmetic number, because the mean of its divisors is an integer number (3106919457705).

Almost surely, 2^{20121002202212} is an apocalyptic number.

It is an amenable number.

20121002202212 is a deficient number, since it is larger than the sum of its proper divisors (17162031290248).

20121002202212 is a wasteful number, since it uses less digits than its factorization.

20121002202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295897091230 (or 295897091228 counting only the distinct ones).

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

Adding to 20121002202212 its reverse (21220220012102), we get a palindrome (41341222214314).

The spelling of 20121002202212 in words is "twenty trillion, one hundred twenty-one billion, two million, two hundred two thousand, two hundred twelve".