12009191002 has 16 divisors (see below), whose sum is σ = 18089229312. Its totient is φ = 5979484800.

The previous prime is 12009190969. The next prime is 12009191009. The reversal of 12009191002 is 20019190021.

It is not an unprimeable number, because it can be changed into a prime (12009191009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 698218 + ... + 715210.

It is an arithmetic number, because the mean of its divisors is an integer number (1130576832).

Almost surely, 2^12009191002 is an apocalyptic number.

12009191002 is a deficient number, since it is larger than the sum of its proper divisors (6080038310).

12009191002 is a wasteful number, since it uses less digits than its factorization.

12009191002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18453.

The product of its (nonzero) digits is 324, while the sum is 25.

The spelling of 12009191002 in words is "twelve billion, nine million, one hundred ninety-one thousand, two".