999900001010012 has 24 divisors (see below), whose sum is σ = 1892176222192704. Its totient is φ = 460529662541312.

The previous prime is 999900001009957. The next prime is 999900001010017. The reversal of 999900001010012 is 210010100009999.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999900001010017) 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, 156429909353 + ... + 156429915744.

It is an arithmetic number, because the mean of its divisors is an integer number (78840675924696).

Almost surely, 2^{999900001010012} is an apocalyptic number.

It is an amenable number.

999900001010012 is a deficient number, since it is larger than the sum of its proper divisors (892276221182692).

999900001010012 is a wasteful number, since it uses less digits than its factorization.

999900001010012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312859825165 (or 312859825163 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 41.

The spelling of 999900001010012 in words is "nine hundred ninety-nine trillion, nine hundred billion, one million, ten thousand, twelve".