111211021121222 has 32 divisors (see below), whose sum is σ = 183847139230464. Its totient is φ = 50032625292000.

The previous prime is 111211021121087. The next prime is 111211021121227. The reversal of 111211021121222 is 222121120112111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111211021121194 and 111211021121203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211021121227) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2253248 + ... + 15083075.

It is an arithmetic number, because the mean of its divisors is an integer number (5745223100952).

Almost surely, 2^{111211021121222} is an apocalyptic number.

111211021121222 is a deficient number, since it is larger than the sum of its proper divisors (72636118109242).

111211021121222 is a wasteful number, since it uses less digits than its factorization.

111211021121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17339324.

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

Adding to 111211021121222 its reverse (222121120112111), we get a palindrome (333332141233333).

The spelling of 111211021121222 in words is "one hundred eleven trillion, two hundred eleven billion, twenty-one million, one hundred twenty-one thousand, two hundred twenty-two".