111221111210222 has 16 divisors (see below), whose sum is σ = 181939110843840. Its totient is φ = 50683038018912.

The previous prime is 111221111210137. The next prime is 111221111210227. The reversal of 111221111210222 is 222012111122111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111221111210194 and 111221111210203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221111210227) 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, 27074270393 + ... + 27074274500.

It is an arithmetic number, because the mean of its divisors is an integer number (11371194427740).

Almost surely, 2^{111221111210222} is an apocalyptic number.

111221111210222 is a deficient number, since it is larger than the sum of its proper divisors (70717999633618).

111221111210222 is a wasteful number, since it uses less digits than its factorization.

111221111210222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54148544987.

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

Adding to 111221111210222 its reverse (222012111122111), we get a palindrome (333233222332333).

The spelling of 111221111210222 in words is "one hundred eleven trillion, two hundred twenty-one billion, one hundred eleven million, two hundred ten thousand, two hundred twenty-two".