220211221111212 has 48 divisors (see below), whose sum is σ = 544105065111552. Its totient is φ = 69079039898880.

The previous prime is 220211221111201. The next prime is 220211221111283. The reversal of 220211221111212 is 212111122112022.

It is a super-2 number, since 2×220211221111212² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51318168 + ... + 55443455.

It is an arithmetic number, because the mean of its divisors is an integer number (11335522189824).

Almost surely, 2^{220211221111212} is an apocalyptic number.

It is an amenable number.

220211221111212 is an abundant number, since it is smaller than the sum of its proper divisors (323893844000340).

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

220211221111212 is a wasteful number, since it uses less digits than its factorization.

220211221111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106771758 (or 106771756 counting only the distinct ones).

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

Adding to 220211221111212 its reverse (212111122112022), we get a palindrome (432322343223234).

The spelling of 220211221111212 in words is "two hundred twenty trillion, two hundred eleven billion, two hundred twenty-one million, one hundred eleven thousand, two hundred twelve".