1214055111 has 4 divisors (see below), whose sum is σ = 1618740152. Its totient is φ = 809370072.

The previous prime is 1214055107. The next prime is 1214055131. The reversal of 1214055111 is 1115504121.

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

It is not a de Polignac number, because 1214055111 - 2² = 1214055107 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 (1214055131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202342516 + ... + 202342521.

It is an arithmetic number, because the mean of its divisors is an integer number (404685038).

Almost surely, 2^1214055111 is an apocalyptic number.

1214055111 is a deficient number, since it is larger than the sum of its proper divisors (404685041).

1214055111 is an equidigital number, since it uses as much as digits as its factorization.

1214055111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404685040.

The product of its (nonzero) digits is 200, while the sum is 21.

The square root of 1214055111 is about 34843.2936301952. The cubic root of 1214055111 is about 1066.7913048476.

Adding to 1214055111 its reverse (1115504121), we get a palindrome (2329559232).

The spelling of 1214055111 in words is "one billion, two hundred fourteen million, fifty-five thousand, one hundred eleven".