202122010985 has 4 divisors (see below), whose sum is σ = 242546413188. Its totient is φ = 161697608784.

The previous prime is 202122010973. The next prime is 202122011017. The reversal of 202122010985 is 589010221202.

It is a happy number.

202122010985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73910034496 + 128211976489 = 271864^2 + 358067^2 .

It is a cyclic number.

It is not a de Polignac number, because 202122010985 - 2¹⁴ = 202121994601 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 20212201094 + ... + 20212201103.

It is an arithmetic number, because the mean of its divisors is an integer number (60636603297).

Almost surely, 2^202122010985 is an apocalyptic number.

It is an amenable number.

202122010985 is a deficient number, since it is larger than the sum of its proper divisors (40424402203).

202122010985 is an equidigital number, since it uses as much as digits as its factorization.

202122010985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40424402202.

The product of its (nonzero) digits is 5760, while the sum is 32.

The spelling of 202122010985 in words is "two hundred two billion, one hundred twenty-two million, ten thousand, nine hundred eighty-five".