9821971465102 has 16 divisors (see below), whose sum is σ = 15132427466112. Its totient is φ = 4777851471840.

The previous prime is 9821971465091. The next prime is 9821971465121. The reversal of 9821971465102 is 2015641791289.

It is a super-2 number, since 2×9821971465102² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4743774 + ... + 6492097.

It is an arithmetic number, because the mean of its divisors is an integer number (945776716632).

Almost surely, 2^{9821971465102} is an apocalyptic number.

9821971465102 is a deficient number, since it is larger than the sum of its proper divisors (5310456001010).

9821971465102 is a wasteful number, since it uses less digits than its factorization.

9821971465102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11247723.

The product of its (nonzero) digits is 2177280, while the sum is 55.

The spelling of 9821971465102 in words is "nine trillion, eight hundred twenty-one billion, nine hundred seventy-one million, four hundred sixty-five thousand, one hundred two".