103212135999 has 12 divisors (see below), whose sum is σ = 170381938896. Its totient is φ = 58978363392.

The previous prime is 103212135997. The next prime is 103212136007. The reversal of 103212135999 is 999531212301.

103212135999 is a `hidden beast` number, since 1 + 0 + 32 + 1 + 21 + 3 + 599 + 9 = 666.

It is not a de Polignac number, because 103212135999 - 2¹ = 103212135997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103212135991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 819143874 + ... + 819143999.

It is an arithmetic number, because the mean of its divisors is an integer number (14198494908).

Almost surely, 2^103212135999 is an apocalyptic number.

103212135999 is a deficient number, since it is larger than the sum of its proper divisors (67169802897).

103212135999 is a wasteful number, since it uses less digits than its factorization.

103212135999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638287886 (or 1638287883 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The spelling of 103212135999 in words is "one hundred three billion, two hundred twelve million, one hundred thirty-five thousand, nine hundred ninety-nine".