4021141220321 has 4 divisors (see below), whose sum is σ = 4021184574144. Its totient is φ = 4021097866500.

The previous prime is 4021141220311. The next prime is 4021141220323. The reversal of 4021141220321 is 1230221411204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4021141220321 - 2¹⁰ = 4021141219297 is a prime.

It is a super-2 number, since 2×4021141220321² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4021141220323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21537485 + ... + 21723386.

It is an arithmetic number, because the mean of its divisors is an integer number (1005296143536).

Almost surely, 2^{4021141220321} is an apocalyptic number.

It is an amenable number.

4021141220321 is a deficient number, since it is larger than the sum of its proper divisors (43353823).

4021141220321 is an equidigital number, since it uses as much as digits as its factorization.

4021141220321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43353822.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 4021141220321 its reverse (1230221411204), we get a palindrome (5251362631525).

The spelling of 4021141220321 in words is "four trillion, twenty-one billion, one hundred forty-one million, two hundred twenty thousand, three hundred twenty-one".