12706102821 has 16 divisors (see below), whose sum is σ = 17942007168. Its totient is φ = 7970688000.

The previous prime is 12706102777. The next prime is 12706102823. The reversal of 12706102821 is 12820160721.

It is not a de Polignac number, because 12706102821 - 2⁶ = 12706102757 is a prime.

It is a super-2 number, since 2×12706102821² (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 (12706102823) 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, 227341 + ... + 277661.

It is an arithmetic number, because the mean of its divisors is an integer number (1121375448).

Almost surely, 2^12706102821 is an apocalyptic number.

It is an amenable number.

12706102821 is a deficient number, since it is larger than the sum of its proper divisors (5235904347).

12706102821 is a wasteful number, since it uses less digits than its factorization.

12706102821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55292.

The product of its (nonzero) digits is 2688, while the sum is 30.

The spelling of 12706102821 in words is "twelve billion, seven hundred six million, one hundred two thousand, eight hundred twenty-one".