2144421401 has 4 divisors (see below), whose sum is σ = 2196724404. Its totient is φ = 2092118400.

The previous prime is 2144421379. The next prime is 2144421431. The reversal of 2144421401 is 1041244412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 239011600 + 1905409801 = 15460^2 + 43651^2 .

It is a cyclic number.

It is not a de Polignac number, because 2144421401 - 2¹⁸ = 2144159257 is a prime.

It is a super-3 number, since 3×2144421401³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2144421431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26151440 + ... + 26151521.

It is an arithmetic number, because the mean of its divisors is an integer number (549181101).

Almost surely, 2^2144421401 is an apocalyptic number.

It is an amenable number.

2144421401 is a deficient number, since it is larger than the sum of its proper divisors (52303003).

2144421401 is an equidigital number, since it uses as much as digits as its factorization.

2144421401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52303002.

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 2144421401 is about 46307.8978253170. The cubic root of 2144421401 is about 1289.5456206741.

Adding to 2144421401 its reverse (1041244412), we get a palindrome (3185665813).

The spelling of 2144421401 in words is "two billion, one hundred forty-four million, four hundred twenty-one thousand, four hundred one".