340221211 has 4 divisors (see below), whose sum is σ = 371150424. Its totient is φ = 309292000.

The previous prime is 340221209. The next prime is 340221223. The reversal of 340221211 is 112122043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112122043 = 11 ⋅10192913.

It is a cyclic number.

It is not a de Polignac number, because 340221211 - 2¹ = 340221209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340227211) 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, 15464590 + ... + 15464611.

It is an arithmetic number, because the mean of its divisors is an integer number (92787606).

Almost surely, 2^340221211 is an apocalyptic number.

340221211 is a deficient number, since it is larger than the sum of its proper divisors (30929213).

340221211 is a wasteful number, since it uses less digits than its factorization.

340221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30929212.

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

The square root of 340221211 is about 18445.0863646663. The cubic root of 340221211 is about 698.1045394500.

Adding to 340221211 its reverse (112122043), we get a palindrome (452343254).

The spelling of 340221211 in words is "three hundred forty million, two hundred twenty-one thousand, two hundred eleven".