111222211202211 has 32 divisors (see below), whose sum is σ = 148688340023808. Its totient is φ = 73952394405120.

The previous prime is 111222211202131. The next prime is 111222211202233. The reversal of 111222211202211 is 112202112222111.

It is not a de Polignac number, because 111222211202211 - 2¹⁰ = 111222211201187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111222211202111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12114385041 + ... + 12114394221.

It is an arithmetic number, because the mean of its divisors is an integer number (4646510625744).

Almost surely, 2^{111222211202211} is an apocalyptic number.

111222211202211 is a deficient number, since it is larger than the sum of its proper divisors (37466128821597).

111222211202211 is a wasteful number, since it uses less digits than its factorization.

111222211202211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15771.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 111222211202211 its reverse (112202112222111), we get a palindrome (223424323424322).

The spelling of 111222211202211 in words is "one hundred eleven trillion, two hundred twenty-two billion, two hundred eleven million, two hundred two thousand, two hundred eleven".