4223111213421 has 16 divisors (see below), whose sum is σ = 6273234425920. Its totient is φ = 2807859459600.

The previous prime is 4223111213417. The next prime is 4223111213459. The reversal of 4223111213421 is 1243121113224.

4223111213421 is a `hidden beast` number, since 4 + 2 + 2 + 311 + 1 + 2 + 1 + 342 + 1 = 666.

4223111213421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4223111213421 - 2² = 4223111213417 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4223111613421) 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, 209656855 + ... + 209676996.

It is an arithmetic number, because the mean of its divisors is an integer number (392077151620).

Almost surely, 2^{4223111213421} is an apocalyptic number.

It is an amenable number.

4223111213421 is a deficient number, since it is larger than the sum of its proper divisors (2050123212499).

4223111213421 is a wasteful number, since it uses less digits than its factorization.

4223111213421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419334233 (or 419334227 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

Adding to 4223111213421 its reverse (1243121113224), we get a palindrome (5466232326645).

The spelling of 4223111213421 in words is "four trillion, two hundred twenty-three billion, one hundred eleven million, two hundred thirteen thousand, four hundred twenty-one".