220111121212 has 24 divisors (see below), whose sum is σ = 403765960752. Its totient is φ = 104874268800.

The previous prime is 220111121201. The next prime is 220111121213. The reversal of 220111121212 is 212121111022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220111121213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15599239 + ... + 15613342.

It is an arithmetic number, because the mean of its divisors is an integer number (16823581698).

Almost surely, 2^220111121212 is an apocalyptic number.

It is an amenable number.

220111121212 is a deficient number, since it is larger than the sum of its proper divisors (183654839540).

220111121212 is a wasteful number, since it uses less digits than its factorization.

220111121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31212669 (or 31212667 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 220111121212 its reverse (212121111022), we get a palindrome (432232232234).

The spelling of 220111121212 in words is "two hundred twenty billion, one hundred eleven million, one hundred twenty-one thousand, two hundred twelve".