111212211210212 has 48 divisors (see below), whose sum is σ = 222494604165120. Its totient is φ = 47647339432992.

The previous prime is 111212211210203. The next prime is 111212211210257. The reversal of 111212211210212 is 212012112212111.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1524274589 + ... + 1524347547.

It is an arithmetic number, because the mean of its divisors is an integer number (4635304253440).

Almost surely, 2^{111212211210212} is an apocalyptic number.

It is an amenable number.

111212211210212 is an abundant number, since it is smaller than the sum of its proper divisors (111282392954908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111212211210212 is a wasteful number, since it uses less digits than its factorization.

111212211210212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89400 (or 89398 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 111212211210212 its reverse (212012112212111), we get a palindrome (323224323422323).

The spelling of 111212211210212 in words is "one hundred eleven trillion, two hundred twelve billion, two hundred eleven million, two hundred ten thousand, two hundred twelve".