111222210212 has 24 divisors (see below), whose sum is σ = 201380369400. Its totient is φ = 53685529856.

The previous prime is 111222210163. The next prime is 111222210259. The reversal of 111222210212 is 212012222111.

It can be written as a sum of positive squares in 4 ways, for example, as 2728390756 + 108493819456 = 52234^2 + 329384^2 .

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, 757208 + ... + 892080.

It is an arithmetic number, because the mean of its divisors is an integer number (8390848725).

Almost surely, 2^111222210212 is an apocalyptic number.

It is an amenable number.

111222210212 is a deficient number, since it is larger than the sum of its proper divisors (90158159188).

111222210212 is a wasteful number, since it uses less digits than its factorization.

111222210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142015 (or 142013 counting only the distinct ones).

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

Adding to 111222210212 its reverse (212012222111), we get a palindrome (323234432323).

The spelling of 111222210212 in words is "one hundred eleven billion, two hundred twenty-two million, two hundred ten thousand, two hundred twelve".