1340220111 has 16 divisors (see below), whose sum is σ = 1799616000. Its totient is φ = 887168160.

The previous prime is 1340220083. The next prime is 1340220127. The reversal of 1340220111 is 1110220431.

It is not a de Polignac number, because 1340220111 - 2¹⁰ = 1340219087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340220151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 445390 + ... + 448388.

It is an arithmetic number, because the mean of its divisors is an integer number (112476000).

Almost surely, 2^1340220111 is an apocalyptic number.

1340220111 is a deficient number, since it is larger than the sum of its proper divisors (459395889).

1340220111 is a wasteful number, since it uses less digits than its factorization.

1340220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4006.

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

The square root of 1340220111 is about 36609.0167991439. The cubic root of 1340220111 is about 1102.5341329718.

Adding to 1340220111 its reverse (1110220431), we get a palindrome (2450440542).

The spelling of 1340220111 in words is "one billion, three hundred forty million, two hundred twenty thousand, one hundred eleven".