4331201142421 has 8 divisors (see below), whose sum is σ = 4337823514904. Its totient is φ = 4324583831040.

The previous prime is 4331201142419. The next prime is 4331201142431. The reversal of 4331201142421 is 1242411021334.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3765676086225 + 565525056196 = 1940535^2 + 752014^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 4331201142421 - 2¹ = 4331201142419 is a prime.

It is a super-2 number, since 2×4331201142421² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4331201142421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4331201142431) 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, 449371 + ... + 2977303.

It is an arithmetic number, because the mean of its divisors is an integer number (542227939363).

Almost surely, 2^{4331201142421} is an apocalyptic number.

It is an amenable number.

4331201142421 is a deficient number, since it is larger than the sum of its proper divisors (6622372483).

4331201142421 is a wasteful number, since it uses less digits than its factorization.

4331201142421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2530551.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 4331201142421 its reverse (1242411021334), we get a palindrome (5573612163755).

The spelling of 4331201142421 in words is "four trillion, three hundred thirty-one billion, two hundred one million, one hundred forty-two thousand, four hundred twenty-one".