1112122122100 has 72 divisors (see below), whose sum is σ = 2635897416768. Its totient is φ = 403916332800.

The previous prime is 1112122122091. The next prime is 1112122122173. The reversal of 1112122122100 is 12212212111.

It is a super-2 number, since 2×1112122122100² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 291072 + ... + 1519528.

It is an arithmetic number, because the mean of its divisors is an integer number (36609686344).

Almost surely, 2^{1112122122100} is an apocalyptic number.

1112122122100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1112122122100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1317948708384).

1112122122100 is an abundant number, since it is smaller than the sum of its proper divisors (1523775294668).

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

1112122122100 is a wasteful number, since it uses less digits than its factorization.

1112122122100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229305 (or 1229298 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1112122122100 its reverse (12212212111), we get a palindrome (1124334334211).

The spelling of 1112122122100 in words is "one trillion, one hundred twelve billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred".