121112221032 has 128 divisors (see below), whose sum is σ = 388595491200. Its totient is φ = 34541798400.

The previous prime is 121112221019. The next prime is 121112221063. The reversal of 121112221032 is 230122211121.

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

It is a junction number, because it is equal to n+sod(n) for n = 121112220996 and 121112221014.

It is an unprimeable number.

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, 1458819 + ... + 1539602.

It is an arithmetic number, because the mean of its divisors is an integer number (3035902275).

Almost surely, 2^121112221032 is an apocalyptic number.

121112221032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121112221032 is an abundant number, since it is smaller than the sum of its proper divisors (267483270168).

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

121112221032 is a wasteful number, since it uses less digits than its factorization.

121112221032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2998464 (or 2998454 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 121112221032 its reverse (230122211121), we get a palindrome (351234432153).

The spelling of 121112221032 in words is "one hundred twenty-one billion, one hundred twelve million, two hundred twenty-one thousand, thirty-two".