111222101211 has 16 divisors (see below), whose sum is σ = 159787120416. Its totient is φ = 68408545536.

The previous prime is 111222101209. The next prime is 111222101233. The reversal of 111222101211 is 112101222111.

It is a happy number.

It is not a de Polignac number, because 111222101211 - 2¹ = 111222101209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111222101251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 670780 + ... + 819993.

It is an arithmetic number, because the mean of its divisors is an integer number (9986695026).

Almost surely, 2^111222101211 is an apocalyptic number.

111222101211 is a deficient number, since it is larger than the sum of its proper divisors (48565019205).

111222101211 is a wasteful number, since it uses less digits than its factorization.

111222101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492702.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111222101211 its reverse (112101222111), we get a palindrome (223323323322).

The spelling of 111222101211 in words is "one hundred eleven billion, two hundred twenty-two million, one hundred one thousand, two hundred eleven".