2113216891001 has 4 divisors (see below), whose sum is σ = 2113363037604. Its totient is φ = 2113070744400.

The previous prime is 2113216890991. The next prime is 2113216891013. The reversal of 2113216891001 is 1001986123112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 263410165225 + 1849806725776 = 513235^2 + 1360076^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2113216891001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2113216591001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73051610 + ... + 73080531.

It is an arithmetic number, because the mean of its divisors is an integer number (528340759401).

Almost surely, 2^{2113216891001} is an apocalyptic number.

It is an amenable number.

2113216891001 is a deficient number, since it is larger than the sum of its proper divisors (146146603).

2113216891001 is a wasteful number, since it uses less digits than its factorization.

2113216891001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146146602.

The product of its (nonzero) digits is 5184, while the sum is 35.

The spelling of 2113216891001 in words is "two trillion, one hundred thirteen billion, two hundred sixteen million, eight hundred ninety-one thousand, one".