1213350111 has 20 divisors (see below), whose sum is σ = 1875040200. Its totient is φ = 781005456.

The previous prime is 1213350107. The next prime is 1213350113. The reversal of 1213350111 is 1110533121.

1213350111 is a `hidden beast` number, since 121 + 33 + 501 + 11 = 666.

It is not a de Polignac number, because 1213350111 - 2² = 1213350107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213350113) 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 19 ways as a sum of consecutive naturals, for example, 255921 + ... + 260618.

It is an arithmetic number, because the mean of its divisors is an integer number (93752010).

Almost surely, 2^1213350111 is an apocalyptic number.

1213350111 is a deficient number, since it is larger than the sum of its proper divisors (661690089).

1213350111 is an equidigital number, since it uses as much as digits as its factorization.

1213350111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516580 (or 516571 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 1213350111 is about 34833.1754366437. The cubic root of 1213350111 is about 1066.5847701555.

Adding to 1213350111 its reverse (1110533121), we get a palindrome (2323883232).

The spelling of 1213350111 in words is "one billion, two hundred thirteen million, three hundred fifty thousand, one hundred eleven".