42221311 has 8 divisors (see below), whose sum is σ = 46280448. Its totient is φ = 38199000.

The previous prime is 42221299. The next prime is 42221321. The reversal of 42221311 is 11312224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42221311 - 2¹¹ = 42219263 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 (42221321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6775 + ... + 11416.

It is an arithmetic number, because the mean of its divisors is an integer number (5785056).

Almost surely, 2^42221311 is an apocalyptic number.

42221311 is a deficient number, since it is larger than the sum of its proper divisors (4059137).

42221311 is a wasteful number, since it uses less digits than its factorization.

42221311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18413.

The product of its digits is 96, while the sum is 16.

The square root of 42221311 is about 6497.7927790905. The cubic root of 42221311 is about 348.2121372488.

Adding to 42221311 its reverse (11312224), we get a palindrome (53533535).

It can be divided in two parts, 422213 and 11, that added together give a palindrome (422224).

The spelling of 42221311 in words is "forty-two million, two hundred twenty-one thousand, three hundred eleven".