9913218701 has 4 divisors (see below), whose sum is σ = 9917444832. Its totient is φ = 9908992572.

The previous prime is 9913218677. The next prime is 9913218703. The reversal of 9913218701 is 1078123199.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9913218701 - 2²² = 9909024397 is a prime.

It is a super-2 number, since 2×9913218701² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9913218703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2109545 + ... + 2114238.

It is an arithmetic number, because the mean of its divisors is an integer number (2479361208).

Almost surely, 2^9913218701 is an apocalyptic number.

It is an amenable number.

9913218701 is a deficient number, since it is larger than the sum of its proper divisors (4226131).

9913218701 is a wasteful number, since it uses less digits than its factorization.

9913218701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4226130.

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 9913218701 is about 99565.1480237939. The cubic root of 9913218701 is about 2148.1844200940.

The spelling of 9913218701 in words is "nine billion, nine hundred thirteen million, two hundred eighteen thousand, seven hundred one".