10684738221 has 32 divisors (see below), whose sum is σ = 15818405760. Its totient is φ = 6384236544.

The previous prime is 10684738213. The next prime is 10684738231. The reversal of 10684738221 is 12283748601.

It is not a de Polignac number, because 10684738221 - 2³ = 10684738213 is a prime.

It is a super-2 number, since 2×10684738221² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10684738201) 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 31 ways as a sum of consecutive naturals, for example, 58486 + ... + 157448.

It is an arithmetic number, because the mean of its divisors is an integer number (494325180).

Almost surely, 2^10684738221 is an apocalyptic number.

It is an amenable number.

10684738221 is a deficient number, since it is larger than the sum of its proper divisors (5133667539).

10684738221 is a wasteful number, since it uses less digits than its factorization.

10684738221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99085.

The product of its (nonzero) digits is 129024, while the sum is 42.

The spelling of 10684738221 in words is "ten billion, six hundred eighty-four million, seven hundred thirty-eight thousand, two hundred twenty-one".