121002705 has 12 divisors (see below), whose sum is σ = 209738100. Its totient is φ = 64534752.

The previous prime is 121002671. The next prime is 121002727. The reversal of 121002705 is 507200121.

It can be written as a sum of positive squares in 2 ways, for example, as 15303744 + 105698961 = 3912^2 + 10281^2 .

It is not a de Polignac number, because 121002705 - 2¹⁰ = 121001681 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1344430 + ... + 1344519.

It is an arithmetic number, because the mean of its divisors is an integer number (17478175).

Almost surely, 2^121002705 is an apocalyptic number.

121002705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121002705 is a deficient number, since it is larger than the sum of its proper divisors (88735395).

121002705 is a wasteful number, since it uses less digits than its factorization.

121002705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2688960 (or 2688957 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 121002705 is about 11000.1229538583. The cubic root of 121002705 is about 494.6124300182.

Adding to 121002705 its reverse (507200121), we get a palindrome (628202826).

The spelling of 121002705 in words is "one hundred twenty-one million, two thousand, seven hundred five".