121122201112220 has 96 divisors (see below), whose sum is σ = 317425165424640. Its totient is φ = 37716038576640.

The previous prime is 121122201112093. The next prime is 121122201112243. The reversal of 121122201112220 is 22211102221121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 121122201112192 and 121122201112201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36249209 + ... + 39449328.

It is an arithmetic number, because the mean of its divisors is an integer number (3306512139840).

Almost surely, 2^{121122201112220} is an apocalyptic number.

121122201112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121122201112220 is an abundant number, since it is smaller than the sum of its proper divisors (196302964312420).

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

121122201112220 is a wasteful number, since it uses less digits than its factorization.

121122201112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75699603 (or 75699601 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 121122201112220 its reverse (22211102221121), we get a palindrome (143333303333341).

The spelling of 121122201112220 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, two hundred one million, one hundred twelve thousand, two hundred twenty".