1099010012 has 24 divisors (see below), whose sum is σ = 2020204032. Its totient is φ = 522126000.

The previous prime is 1099010009. The next prime is 1099010021. The reversal of 1099010012 is 2100109901.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 1099010012.

It is a congruent number.

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, 25664 + ... + 53447.

It is an arithmetic number, because the mean of its divisors is an integer number (84175168).

Almost surely, 2^1099010012 is an apocalyptic number.

It is an amenable number.

1099010012 is a deficient number, since it is larger than the sum of its proper divisors (921194020).

1099010012 is a wasteful number, since it uses less digits than its factorization.

1099010012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79289 (or 79287 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 1099010012 is about 33151.3199133911. The cubic root of 1099010012 is about 1031.9703422260.

Adding to 1099010012 its reverse (2100109901), we get a palindrome (3199119913).

The spelling of 1099010012 in words is "one billion, ninety-nine million, ten thousand, twelve".