111022221212 has 48 divisors (see below), whose sum is σ = 222678263808. Its totient is φ = 47445340800.

The previous prime is 111022221169. The next prime is 111022221227. The reversal of 111022221212 is 212122220111.

It is a congruent 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, 15521837 + ... + 15528987.

It is an arithmetic number, because the mean of its divisors is an integer number (4639130496).

Almost surely, 2^111022221212 is an apocalyptic number.

It is an amenable number.

111022221212 is an abundant number, since it is smaller than the sum of its proper divisors (111656042596).

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

111022221212 is a wasteful number, since it uses less digits than its factorization.

111022221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8666 (or 8664 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 111022221212 its reverse (212122220111), we get a palindrome (323144441323).

The spelling of 111022221212 in words is "one hundred eleven billion, twenty-two million, two hundred twenty-one thousand, two hundred twelve".