20112212202212 has 12 divisors (see below), whose sum is σ = 37903784535036. Its totient is φ = 9282559477920.

The previous prime is 20112212202169. The next prime is 20112212202223. The reversal of 20112212202212 is 21220221221102.

It can be written as a sum of positive squares in 2 ways, for example, as 6178237187236 + 13933975014976 = 2485606^2 + 3732824^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193386655739 + ... + 193386655842.

It is an arithmetic number, because the mean of its divisors is an integer number (3158648711253).

Almost surely, 2^{20112212202212} is an apocalyptic number.

It is an amenable number.

20112212202212 is a deficient number, since it is larger than the sum of its proper divisors (17791572332824).

20112212202212 is a wasteful number, since it uses less digits than its factorization.

20112212202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386773311598 (or 386773311596 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20112212202212 its reverse (21220221221102), we get a palindrome (41332433423314).

The spelling of 20112212202212 in words is "twenty trillion, one hundred twelve billion, two hundred twelve million, two hundred two thousand, two hundred twelve".