220311111212 has 12 divisors (see below), whose sum is σ = 385845895680. Its totient is φ = 110069426736.

The previous prime is 220311111199. The next prime is 220311111233. The reversal of 220311111212 is 212111113022.

It is a happy number.

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, 21526463 + ... + 21536694.

It is an arithmetic number, because the mean of its divisors is an integer number (32153824640).

Almost surely, 2^220311111212 is an apocalyptic number.

It is an amenable number.

220311111212 is a deficient number, since it is larger than the sum of its proper divisors (165534784468).

220311111212 is a wasteful number, since it uses less digits than its factorization.

220311111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43064440 (or 43064438 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 220311111212 its reverse (212111113022), we get a palindrome (432422224234).

The spelling of 220311111212 in words is "two hundred twenty billion, three hundred eleven million, one hundred eleven thousand, two hundred twelve".