1115513212 has 12 divisors (see below), whose sum is σ = 2129616216. Its totient is φ = 507051440.

The previous prime is 1115513209. The next prime is 1115513213. The reversal of 1115513212 is 2123155111.

It is a super-2 number, since 2×1115513212² = 2488739452293113888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115513213) 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, 12676243 + ... + 12676330.

It is an arithmetic number, because the mean of its divisors is an integer number (177468018).

Almost surely, 2^1115513212 is an apocalyptic number.

It is an amenable number.

1115513212 is a deficient number, since it is larger than the sum of its proper divisors (1014103004).

1115513212 is a wasteful number, since it uses less digits than its factorization.

1115513212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25352588 (or 25352586 counting only the distinct ones).

The product of its digits is 300, while the sum is 22.

The square root of 1115513212 is about 33399.2995734941. The cubic root of 1115513212 is about 1037.1102013100.

Adding to 1115513212 its reverse (2123155111), we get a palindrome (3238668323).

The spelling of 1115513212 in words is "one billion, one hundred fifteen million, five hundred thirteen thousand, two hundred twelve".