1122122121012 has 96 divisors (see below), whose sum is σ = 2920941811200. Its totient is φ = 372534681600.

The previous prime is 1122122121007. The next prime is 1122122121017. The reversal of 1122122121012 is 2101212212211.

1122122121012 is a `hidden beast` number, since 1 + 1 + 221 + 221 + 210 + 12 = 666.

It is an interprime number because it is at equal distance from previous prime (1122122121007) and next prime (1122122121017).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122122121017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28294437 + ... + 28334067.

It is an arithmetic number, because the mean of its divisors is an integer number (30426477200).

Almost surely, 2^{1122122121012} is an apocalyptic number.

1122122121012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1122122121012 is an abundant number, since it is smaller than the sum of its proper divisors (1798819690188).

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

1122122121012 is a wasteful number, since it uses less digits than its factorization.

1122122121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40694 (or 40686 counting only the distinct ones).

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

Adding to 1122122121012 its reverse (2101212212211), we get a palindrome (3223334333223).

The spelling of 1122122121012 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-two million, one hundred twenty-one thousand, twelve".