111021211222222 has 16 divisors (see below), whose sum is σ = 193442110421472. Its totient is φ = 46800510585120.

The previous prime is 111021211222199. The next prime is 111021211222223. The reversal of 111021211222222 is 222222112120111.

It is a junction number, because it is equal to n+sod(n) for n = 111021211222193 and 111021211222202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111021211222223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65000708293 + ... + 65000710000.

It is an arithmetic number, because the mean of its divisors is an integer number (12090131901342).

Almost surely, 2^{111021211222222} is an apocalyptic number.

111021211222222 is a deficient number, since it is larger than the sum of its proper divisors (82420899199250).

111021211222222 is a wasteful number, since it uses less digits than its factorization.

111021211222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130001418363.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 111021211222222 its reverse (222222112120111), we get a palindrome (333243323342333).

The spelling of 111021211222222 in words is "one hundred eleven trillion, twenty-one billion, two hundred eleven million, two hundred twenty-two thousand, two hundred twenty-two".