1222112121112 has 8 divisors (see below), whose sum is σ = 2291460227100. Its totient is φ = 611056060552.

The previous prime is 1222112121071. The next prime is 1222112121127. The reversal of 1222112121112 is 2111212112221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1222112121112² (a number of 25 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1222112121112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76382007562 + ... + 76382007577.

Almost surely, 2^{1222112121112} is an apocalyptic number.

It is an amenable number.

1222112121112 is a deficient number, since it is larger than the sum of its proper divisors (1069348105988).

1222112121112 is a wasteful number, since it uses less digits than its factorization.

1222112121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152764015145 (or 152764015141 counting only the distinct ones).

The product of its digits is 64, while the sum is 19.

Adding to 1222112121112 its reverse (2111212112221), we get a palindrome (3333324233333).

The spelling of 1222112121112 in words is "one trillion, two hundred twenty-two billion, one hundred twelve million, one hundred twenty-one thousand, one hundred twelve".