111121001220222 has 32 divisors (see below), whose sum is σ = 282212066592000. Its totient is φ = 31748857491384.

The previous prime is 111121001220221. The next prime is 111121001220233. The reversal of 111121001220222 is 222022100121111.

111121001220222 is a `hidden beast` number, since 1 + 1 + 11 + 210 + 0 + 1 + 220 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111121001220195 and 111121001220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111121001220221) 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, 146985450972 + ... + 146985451727.

It is an arithmetic number, because the mean of its divisors is an integer number (8819127081000).

Almost surely, 2^{111121001220222} is an apocalyptic number.

111121001220222 is an abundant number, since it is smaller than the sum of its proper divisors (171091065371778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111121001220222 is a wasteful number, since it uses less digits than its factorization.

111121001220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293970902717 (or 293970902711 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111121001220222 its reverse (222022100121111), we get a palindrome (333143101341333).

The spelling of 111121001220222 in words is "one hundred eleven trillion, one hundred twenty-one billion, one million, two hundred twenty thousand, two hundred twenty-two".