111220021222 has 8 divisors (see below), whose sum is σ = 166836915000. Its totient is φ = 55607716224.

The previous prime is 111220021219. The next prime is 111220021249. The reversal of 111220021222 is 222120022111.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 111220021196 and 111220021205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1085947 + ... + 1183942.

It is an arithmetic number, because the mean of its divisors is an integer number (20854614375).

Almost surely, 2^111220021222 is an apocalyptic number.

111220021222 is a deficient number, since it is larger than the sum of its proper divisors (55616893778).

111220021222 is a wasteful number, since it uses less digits than its factorization.

111220021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2294390.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 111220021222 its reverse (222120022111), we get a palindrome (333340043333).

The spelling of 111220021222 in words is "one hundred eleven billion, two hundred twenty million, twenty-one thousand, two hundred twenty-two".