10721011688929 has 2 divisors, whose sum is σ = 10721011688930. Its totient is φ = 10721011688928.

The previous prime is 10721011688923. The next prime is 10721011688939. The reversal of 10721011688929 is 92988611012701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7269888090529 + 3451123598400 = 2696273^2 + 1857720^2 .

It is a cyclic number.

It is not a de Polignac number, because 10721011688929 - 2¹¹ = 10721011686881 is a prime.

It is a super-2 number, since 2×10721011688929² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10721011688929.

It is not a weakly prime, because it can be changed into another prime (10721011688923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5360505844464 + 5360505844465.

It is an arithmetic number, because the mean of its divisors is an integer number (5360505844465).

Almost surely, 2^{10721011688929} is an apocalyptic number.

It is an amenable number.

10721011688929 is a deficient number, since it is larger than the sum of its proper divisors (1).

10721011688929 is an equidigital number, since it uses as much as digits as its factorization.

10721011688929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 55.

The spelling of 10721011688929 in words is "ten trillion, seven hundred twenty-one billion, eleven million, six hundred eighty-eight thousand, nine hundred twenty-nine".