4241121320421 has 16 divisors (see below), whose sum is σ = 6284703112000. Its totient is φ = 2826712026864.

The previous prime is 4241121320413. The next prime is 4241121320431. The reversal of 4241121320421 is 1240231211424.

4241121320421 is a `hidden beast` number, since 4 + 2 + 4 + 1 + 1 + 213 + 20 + 421 = 666.

It is not a de Polignac number, because 4241121320421 - 2³ = 4241121320413 is a prime.

It is a super-2 number, since 2×4241121320421² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4241121320431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19394446 + ... + 19611903.

It is an arithmetic number, because the mean of its divisors is an integer number (392793944500).

Almost surely, 2^{4241121320421} is an apocalyptic number.

It is an amenable number.

4241121320421 is a deficient number, since it is larger than the sum of its proper divisors (2043581791579).

4241121320421 is a wasteful number, since it uses less digits than its factorization.

4241121320421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39010385 (or 39010379 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 4241121320421 its reverse (1240231211424), we get a palindrome (5481352531845).

The spelling of 4241121320421 in words is "four trillion, two hundred forty-one billion, one hundred twenty-one million, three hundred twenty thousand, four hundred twenty-one".