4121423344221 has 8 divisors (see below), whose sum is σ = 5518223725440. Its totient is φ = 2736119262912.

The previous prime is 4121423344217. The next prime is 4121423344279. The reversal of 4121423344221 is 1224433241214.

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

It is not a de Polignac number, because 4121423344221 - 2² = 4121423344217 is a prime.

It is a super-2 number, since 2×4121423344221² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4121423344201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2874074140 + ... + 2874075573.

It is an arithmetic number, because the mean of its divisors is an integer number (689777965680).

Almost surely, 2^{4121423344221} is an apocalyptic number.

It is an amenable number.

4121423344221 is a deficient number, since it is larger than the sum of its proper divisors (1396800381219).

4121423344221 is a wasteful number, since it uses less digits than its factorization.

4121423344221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5748149955.

The product of its digits is 36864, while the sum is 33.

Adding to 4121423344221 its reverse (1224433241214), we get a palindrome (5345856585435).

It can be divided in two parts, 4121423 and 344221, that added together give a palindrome (4465644).

The spelling of 4121423344221 in words is "four trillion, one hundred twenty-one billion, four hundred twenty-three million, three hundred forty-four thousand, two hundred twenty-one".