213012020110985 has 16 divisors (see below), whose sum is σ = 255716229040272. Its totient is φ = 170341748275200.

The previous prime is 213012020110979. The next prime is 213012020110999. The reversal of 213012020110985 is 589011020210312.

It can be written as a sum of positive squares in 8 ways, for example, as 17757593728576 + 195254426382409 = 4213976^2 + 13973347^2 .

It is not a de Polignac number, because 213012020110985 - 2¹⁶ = 213012020045449 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1305291095 + ... + 1305454275.

It is an arithmetic number, because the mean of its divisors is an integer number (15982264315017).

Almost surely, 2^{213012020110985} is an apocalyptic number.

It is an amenable number.

213012020110985 is a deficient number, since it is larger than the sum of its proper divisors (42704208929287).

213012020110985 is a wasteful number, since it uses less digits than its factorization.

213012020110985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265564.

The product of its (nonzero) digits is 8640, while the sum is 35.

The spelling of 213012020110985 in words is "two hundred thirteen trillion, twelve billion, twenty million, one hundred ten thousand, nine hundred eighty-five".