1100120812 has 24 divisors (see below), whose sum is σ = 2224968480. Its totient is φ = 466181760.

The previous prime is 1100120807. The next prime is 1100120831. The reversal of 1100120812 is 2180210011.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218239 + ... + 223222.

It is an arithmetic number, because the mean of its divisors is an integer number (92707020).

Almost surely, 2^1100120812 is an apocalyptic number.

It is an amenable number.

1100120812 is an abundant number, since it is smaller than the sum of its proper divisors (1124847668).

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

1100120812 is a wasteful number, since it uses less digits than its factorization.

1100120812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441561 (or 441559 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

The square root of 1100120812 is about 33168.0691629766. The cubic root of 1100120812 is about 1032.3179055351.

Adding to 1100120812 its reverse (2180210011), we get a palindrome (3280330823).

It can be divided in two parts, 11001 and 20812, that added together give a palindrome (31813).

The spelling of 1100120812 in words is "one billion, one hundred million, one hundred twenty thousand, eight hundred twelve".