111021121222212 has 48 divisors (see below), whose sum is σ = 269717845953024. Its totient is φ = 35512553760000.

The previous prime is 111021121222199. The next prime is 111021121222217. The reversal of 111021121222212 is 212222121120111.

It is not an unprimeable number, because it can be changed into a prime (111021121222217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1849582164 + ... + 1849642187.

It is an arithmetic number, because the mean of its divisors is an integer number (5619121790688).

Almost surely, 2^{111021121222212} is an apocalyptic number.

111021121222212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111021121222212 is an abundant number, since it is smaller than the sum of its proper divisors (158696724730812).

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

111021121222212 is a wasteful number, since it uses less digits than its factorization.

111021121222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3699224460 (or 3699224458 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 111021121222212 its reverse (212222121120111), we get a palindrome (323243242342323).

The spelling of 111021121222212 in words is "one hundred eleven trillion, twenty-one billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred twelve".