10705354021 has 2 divisors, whose sum is σ = 10705354022. Its totient is φ = 10705354020.

The previous prime is 10705353991. The next prime is 10705354039. The reversal of 10705354021 is 12045350701.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9507225025 + 1198128996 = 97505^2 + 34614^2 .

It is an emirp because it is prime and its reverse (12045350701) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10705354021 - 2¹¹ = 10705351973 is a prime.

It is a super-2 number, since 2×10705354021² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10705354081) 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 as a sum of consecutive naturals, namely, 5352677010 + 5352677011.

It is an arithmetic number, because the mean of its divisors is an integer number (5352677011).

Almost surely, 2^10705354021 is an apocalyptic number.

It is an amenable number.

10705354021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10705354021 is an equidigital number, since it uses as much as digits as its factorization.

10705354021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 28.

The spelling of 10705354021 in words is "ten billion, seven hundred five million, three hundred fifty-four thousand, twenty-one".