1213500112 has 20 divisors (see below), whose sum is σ = 2564898336. Its totient is φ = 551590880.

The previous prime is 1213500109. The next prime is 1213500131. The reversal of 1213500112 is 2110053121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3447268 + ... + 3447619.

Almost surely, 2^1213500112 is an apocalyptic number.

It is an amenable number.

1213500112 is an abundant number, since it is smaller than the sum of its proper divisors (1351398224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213500112 is a wasteful number, since it uses less digits than its factorization.

1213500112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6894906 (or 6894900 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1213500112 is about 34835.3285042642. The cubic root of 1213500112 is about 1066.6287206987.

Adding to 1213500112 its reverse (2110053121), we get a palindrome (3323553233).

The spelling of 1213500112 in words is "one billion, two hundred thirteen million, five hundred thousand, one hundred twelve".