2121221101120 has 112 divisors (see below), whose sum is σ = 5564912798016. Its totient is φ = 763715840000.

The previous prime is 2121221101067. The next prime is 2121221101187. The reversal of 2121221101120 is 211011221212.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 2121221101094 and 2121221101103.

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 15 ways as a sum of consecutive naturals, for example, 2627746 + ... + 3338785.

Almost surely, 2^{2121221101120} is an apocalyptic number.

2121221101120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121221101120 is an abundant number, since it is smaller than the sum of its proper divisors (3443691696896).

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

2121221101120 is a wasteful number, since it uses less digits than its factorization.

2121221101120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5966660 (or 5966650 counting only the distinct ones).

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

Adding to 2121221101120 its reverse (211011221212), we get a palindrome (2332232322332).

The spelling of 2121221101120 in words is "two trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred one thousand, one hundred twenty".