111211202221222 has 16 divisors (see below), whose sum is σ = 175596916014000. Its totient is φ = 52678906247520.

The previous prime is 111211202221211. The next prime is 111211202221297. The reversal of 111211202221222 is 222122202112111.

It is a junction number, because it is equal to n+sod(n) for n = 111211202221193 and 111211202221202.

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, 26262472 + ... + 30201652.

It is an arithmetic number, because the mean of its divisors is an integer number (10974807250875).

Almost surely, 2^{111211202221222} is an apocalyptic number.

111211202221222 is a deficient number, since it is larger than the sum of its proper divisors (64385713792778).

111211202221222 is a wasteful number, since it uses less digits than its factorization.

111211202221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4682151.

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

Adding to 111211202221222 its reverse (222122202112111), we get a palindrome (333333404333333).

The spelling of 111211202221222 in words is "one hundred eleven trillion, two hundred eleven billion, two hundred two million, two hundred twenty-one thousand, two hundred twenty-two".