21244141102120 has 16 divisors (see below), whose sum is σ = 47799317479860. Its totient is φ = 8497656440832.

The previous prime is 21244141102117. The next prime is 21244141102181. The reversal of 21244141102120 is 2120114144212.

It can be written as a sum of positive squares in 2 ways, for example, as 18956079484164 + 2288061617956 = 4353858^2 + 1512634^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265551763737 + ... + 265551763816.

Almost surely, 2^{21244141102120} is an apocalyptic number.

21244141102120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21244141102120 is an abundant number, since it is smaller than the sum of its proper divisors (26555176377740).

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

21244141102120 is a wasteful number, since it uses less digits than its factorization.

21244141102120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531103527564 (or 531103527560 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 21244141102120 its reverse (2120114144212), we get a palindrome (23364255246332).

The spelling of 21244141102120 in words is "twenty-one trillion, two hundred forty-four billion, one hundred forty-one million, one hundred two thousand, one hundred twenty".