4021421332111 has 4 divisors (see below), whose sum is σ = 4021450719912. Its totient is φ = 4021391944312.

The previous prime is 4021421332091. The next prime is 4021421332127. The reversal of 4021421332111 is 1112331241204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4021421332111 - 2¹³ = 4021421323919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021421332151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14487676 + ... + 14762641.

It is an arithmetic number, because the mean of its divisors is an integer number (1005362679978).

Almost surely, 2^{4021421332111} is an apocalyptic number.

4021421332111 is a deficient number, since it is larger than the sum of its proper divisors (29387801).

4021421332111 is a wasteful number, since it uses less digits than its factorization.

4021421332111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29387800.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 4021421332111 its reverse (1112331241204), we get a palindrome (5133752573315).

The spelling of 4021421332111 in words is "four trillion, twenty-one billion, four hundred twenty-one million, three hundred thirty-two thousand, one hundred eleven".