4021112201421 has 16 divisors (see below), whose sum is σ = 6133239177728. Its totient is φ = 2295592110000.

The previous prime is 4021112201401. The next prime is 4021112201497. The reversal of 4021112201421 is 1241022111204.

It is not a de Polignac number, because 4021112201421 - 2⁹ = 4021112200909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021112201401) 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 15 ways as a sum of consecutive naturals, for example, 91072855 + ... + 91116996.

It is an arithmetic number, because the mean of its divisors is an integer number (383327448608).

Almost surely, 2^{4021112201421} is an apocalyptic number.

It is an amenable number.

4021112201421 is a deficient number, since it is larger than the sum of its proper divisors (2112126976307).

4021112201421 is a wasteful number, since it uses less digits than its factorization.

4021112201421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182190912.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 4021112201421 its reverse (1241022111204), we get a palindrome (5262134312625).

The spelling of 4021112201421 in words is "four trillion, twenty-one billion, one hundred twelve million, two hundred one thousand, four hundred twenty-one".