2144321121021 has 8 divisors (see below), whose sum is σ = 2925585405600. Its totient is φ = 1396302125232.

The previous prime is 2144321121013. The next prime is 2144321121023. The reversal of 2144321121021 is 1201211234412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2144321121021 - 2³ = 2144321121013 is a prime.

It is a super-2 number, since 2×2144321121021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2144321120982 and 2144321121000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144321121023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8311322046 + ... + 8311322303.

It is an arithmetic number, because the mean of its divisors is an integer number (365698175700).

Almost surely, 2^{2144321121021} is an apocalyptic number.

It is an amenable number.

2144321121021 is a deficient number, since it is larger than the sum of its proper divisors (781264284579).

2144321121021 is a wasteful number, since it uses less digits than its factorization.

2144321121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16622644395.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 2144321121021 its reverse (1201211234412), we get a palindrome (3345532355433).

The spelling of 2144321121021 in words is "two trillion, one hundred forty-four billion, three hundred twenty-one million, one hundred twenty-one thousand, twenty-one".