1101145512 has 16 divisors (see below), whose sum is σ = 2752863840. Its totient is φ = 367048496.

The previous prime is 1101145511. The next prime is 1101145523. The reversal of 1101145512 is 2155411011.

It is not an unprimeable number, because it can be changed into a prime (1101145511) by changing a digit.

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, 22940508 + ... + 22940555.

It is an arithmetic number, because the mean of its divisors is an integer number (172053990).

Almost surely, 2^1101145512 is an apocalyptic number.

1101145512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1101145512 is an abundant number, since it is smaller than the sum of its proper divisors (1651718328).

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

1101145512 is a wasteful number, since it uses less digits than its factorization.

1101145512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45881072 (or 45881068 counting only the distinct ones).

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

The square root of 1101145512 is about 33183.5126531234. The cubic root of 1101145512 is about 1032.6383212217.

Adding to 1101145512 its reverse (2155411011), we get a palindrome (3256556523).

The spelling of 1101145512 in words is "one billion, one hundred one million, one hundred forty-five thousand, five hundred twelve".