122221001111112 has 32 divisors (see below), whose sum is σ = 339502780864800. Its totient is φ = 40740333703632.

The previous prime is 122221001111087. The next prime is 122221001111159. The reversal of 122221001111112 is 211111100122221.

It is a happy number.

It is a super-2 number, since 2×122221001111112² (a number of 29 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282918983838 + ... + 282918984269.

It is an arithmetic number, because the mean of its divisors is an integer number (10609461902025).

Almost surely, 2^{122221001111112} is an apocalyptic number.

122221001111112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122221001111112 is an abundant number, since it is smaller than the sum of its proper divisors (217281779753688).

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

122221001111112 is a wasteful number, since it uses less digits than its factorization.

122221001111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565837968122 (or 565837968112 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 122221001111112 its reverse (211111100122221), we get a palindrome (333332101233333).

The spelling of 122221001111112 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, one million, one hundred eleven thousand, one hundred twelve".