2144121524240 has 80 divisors (see below), whose sum is σ = 4991074122240. Its totient is φ = 856618506240.

The previous prime is 2144121524221. The next prime is 2144121524323. The reversal of 2144121524240 is 424251214412.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×2144121524240² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2144121524197 and 2144121524206.

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, 308636447 + ... + 308643393.

It is an arithmetic number, because the mean of its divisors is an integer number (62388426528).

Almost surely, 2^{2144121524240} is an apocalyptic number.

2144121524240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2144121524240 is an abundant number, since it is smaller than the sum of its proper divisors (2846952598000).

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

2144121524240 is a wasteful number, since it uses less digits than its factorization.

2144121524240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11040 (or 11034 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 32.

Adding to 2144121524240 its reverse (424251214412), we get a palindrome (2568372738652).

The spelling of 2144121524240 in words is "two trillion, one hundred forty-four billion, one hundred twenty-one million, five hundred twenty-four thousand, two hundred forty".