4021142421121 has 4 divisors (see below), whose sum is σ = 4595591338432. Its totient is φ = 3446693503812.

The previous prime is 4021142421089. The next prime is 4021142421151. The reversal of 4021142421121 is 1211242411204.

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 4021142421121 - 2⁵ = 4021142421089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4021142421151) 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, 287224458645 + ... + 287224458658.

It is an arithmetic number, because the mean of its divisors is an integer number (1148897834608).

Almost surely, 2^{4021142421121} is an apocalyptic number.

It is an amenable number.

4021142421121 is a deficient number, since it is larger than the sum of its proper divisors (574448917311).

4021142421121 is an equidigital number, since it uses as much as digits as its factorization.

4021142421121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574448917310.

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 4021142421121 its reverse (1211242411204), we get a palindrome (5232384832325).

The spelling of 4021142421121 in words is "four trillion, twenty-one billion, one hundred forty-two million, four hundred twenty-one thousand, one hundred twenty-one".