340221111 has 8 divisors (see below), whose sum is σ = 454865664. Its totient is φ = 226195320.

The previous prime is 340221097. The next prime is 340221113. The reversal of 340221111 is 111122043.

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

It is not a de Polignac number, because 340221111 - 2¹¹ = 340219063 is a prime.

It is a super-4 number, since 4×340221111⁴ (a number of 35 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340221113) 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, 153405 + ... + 155606.

It is an arithmetic number, because the mean of its divisors is an integer number (56858208).

Almost surely, 2^340221111 is an apocalyptic number.

340221111 is a deficient number, since it is larger than the sum of its proper divisors (114644553).

340221111 is a wasteful number, since it uses less digits than its factorization.

340221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309381.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 340221111 is about 18445.0836539171. The cubic root of 340221111 is about 698.1044710529.

Adding to 340221111 its reverse (111122043), we get a palindrome (451343154).

The spelling of 340221111 in words is "three hundred forty million, two hundred twenty-one thousand, one hundred eleven".