121112222101220 has 48 divisors (see below), whose sum is σ = 290673211530240. Its totient is φ = 41523636365184.

The previous prime is 121112222101217. The next prime is 121112222101243. The reversal of 121112222101220 is 22101222211121.

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 = 121112222101192 and 121112222101201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4827341 + ... + 16295019.

It is an arithmetic number, because the mean of its divisors is an integer number (6055691906880).

Almost surely, 2^{121112222101220} is an apocalyptic number.

121112222101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121112222101220 is an abundant number, since it is smaller than the sum of its proper divisors (169560989429020).

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

121112222101220 is a wasteful number, since it uses less digits than its factorization.

121112222101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11543132 (or 11543130 counting only the distinct ones).

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

Adding to 121112222101220 its reverse (22101222211121), we get a palindrome (143213444312341).

The spelling of 121112222101220 in words is "one hundred twenty-one trillion, one hundred twelve billion, two hundred twenty-two million, one hundred one thousand, two hundred twenty".