111221232312212 has 24 divisors (see below), whose sum is σ = 213001258811040. Its totient is φ = 50395625761760.

The previous prime is 111221232312119. The next prime is 111221232312241. The reversal of 111221232312212 is 212213232122111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3986981762 + ... + 3987009657.

It is an arithmetic number, because the mean of its divisors is an integer number (8875052450460).

Almost surely, 2^{111221232312212} is an apocalyptic number.

It is an amenable number.

111221232312212 is a deficient number, since it is larger than the sum of its proper divisors (101780026498828).

111221232312212 is a wasteful number, since it uses less digits than its factorization.

111221232312212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7973991751 (or 7973991749 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

Adding to 111221232312212 its reverse (212213232122111), we get a palindrome (323434464434323).

The spelling of 111221232312212 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred thirty-two million, three hundred twelve thousand, two hundred twelve".