1121222210112 has 168 divisors, whose sum is σ = 3444147560256. Its totient is φ = 347829064704.

The previous prime is 1121222210083. The next prime is 1121222210113. The reversal of 1121222210112 is 2110122221211.

1121222210112 is a `hidden beast` number, since 1 + 121 + 222 + 210 + 112 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (1121222210113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 653518 + ... + 1633869.

Almost surely, 2^{1121222210112} is an apocalyptic number.

1121222210112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121222210112 is an abundant number, since it is smaller than the sum of its proper divisors (2322925350144).

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

1121222210112 is a wasteful number, since it uses less digits than its factorization.

1121222210112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2287465 (or 2287452 counting only the distinct ones).

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

Adding to 1121222210112 its reverse (2110122221211), we get a palindrome (3231344431323).

The spelling of 1121222210112 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred ten thousand, one hundred twelve".