212113109999 has 8 divisors (see below), whose sum is σ = 242585349120. Its totient is φ = 181683462456.

The previous prime is 212113109987. The next prime is 212113110047. The reversal of 212113109999 is 999901311212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212113109999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212113103999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10637219 + ... + 10657140.

It is an arithmetic number, because the mean of its divisors is an integer number (30323168640).

Almost surely, 2^212113109999 is an apocalyptic number.

212113109999 is a deficient number, since it is larger than the sum of its proper divisors (30472239121).

212113109999 is a wasteful number, since it uses less digits than its factorization.

212113109999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21295789.

The product of its (nonzero) digits is 78732, while the sum is 47.

The spelling of 212113109999 in words is "two hundred twelve billion, one hundred thirteen million, one hundred nine thousand, nine hundred ninety-nine".