111211111220222 has 8 divisors (see below), whose sum is σ = 179648718125016. Its totient is φ = 51328205178552.

The previous prime is 111211111220201. The next prime is 111211111220233. The reversal of 111211111220222 is 222022111112111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×111211111220222² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111211111220194 and 111211111220203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2138675215748 + ... + 2138675215799.

It is an arithmetic number, because the mean of its divisors is an integer number (22456089765627).

Almost surely, 2^{111211111220222} is an apocalyptic number.

111211111220222 is a deficient number, since it is larger than the sum of its proper divisors (68437606904794).

111211111220222 is a wasteful number, since it uses less digits than its factorization.

111211111220222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4277350431562.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 111211111220222 its reverse (222022111112111), we get a palindrome (333233222332333).

The spelling of 111211111220222 in words is "one hundred eleven trillion, two hundred eleven billion, one hundred eleven million, two hundred twenty thousand, two hundred twenty-two".