4335144221421 has 48 divisors (see below), whose sum is σ = 7168021411824. Its totient is φ = 2501082611712.

The previous prime is 4335144221383. The next prime is 4335144221431. The reversal of 4335144221421 is 1241224415334.

4335144221421 is a `hidden beast` number, since 4 + 3 + 3 + 5 + 1 + 4 + 4 + 221 + 421 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 1499241069225 + 2835903152196 = 1224435^2 + 1684014^2 .

It is not a de Polignac number, because 4335144221421 - 2¹⁵ = 4335144188653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4335144221431) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3729216 + ... + 4751561.

It is an arithmetic number, because the mean of its divisors is an integer number (149333779413).

Almost surely, 2^{4335144221421} is an apocalyptic number.

It is an amenable number.

4335144221421 is a deficient number, since it is larger than the sum of its proper divisors (2832877190403).

4335144221421 is a wasteful number, since it uses less digits than its factorization.

4335144221421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8481070 (or 8481067 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

Adding to 4335144221421 its reverse (1241224415334), we get a palindrome (5576368636755).

The spelling of 4335144221421 in words is "four trillion, three hundred thirty-five billion, one hundred forty-four million, two hundred twenty-one thousand, four hundred twenty-one".