9664101021 has 16 divisors (see below), whose sum is σ = 13208529600. Its totient is φ = 6281412480.

The previous prime is 9664101017. The next prime is 9664101059. The reversal of 9664101021 is 1201014669.

It is a happy number.

It is not a de Polignac number, because 9664101021 - 2² = 9664101017 is a prime.

It is a super-3 number, since 3×9664101021³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9664101021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9664101001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165166 + ... + 215888.

It is an arithmetic number, because the mean of its divisors is an integer number (825533100).

Almost surely, 2^9664101021 is an apocalyptic number.

It is an amenable number.

9664101021 is a deficient number, since it is larger than the sum of its proper divisors (3544428579).

9664101021 is a wasteful number, since it uses less digits than its factorization.

9664101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52316.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 9664101021 is about 98306.1596289876. The cubic root of 9664101021 is about 2130.0370305890.

It can be divided in two parts, 9664 and 101021, that added together give a triangular number (110685 = T₄₇₀).

The spelling of 9664101021 in words is "nine billion, six hundred sixty-four million, one hundred one thousand, twenty-one".