210122320985 has 32 divisors (see below), whose sum is σ = 257100480000. Its totient is φ = 164827293696.

The previous prime is 210122320979. The next prime is 210122320987. The reversal of 210122320985 is 589023221012.

It is a cyclic number.

It is not a de Polignac number, because 210122320985 - 2⁸ = 210122320729 is a prime.

It is a super-2 number, since 2×210122320985² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (210122320987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74168129 + ... + 74170961.

It is an arithmetic number, because the mean of its divisors is an integer number (8034390000).

Almost surely, 2^210122320985 is an apocalyptic number.

It is an amenable number.

210122320985 is a deficient number, since it is larger than the sum of its proper divisors (46978159015).

210122320985 is a wasteful number, since it uses less digits than its factorization.

210122320985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4145.

The product of its (nonzero) digits is 17280, while the sum is 35.

Adding to 210122320985 its reverse (589023221012), we get a palindrome (799145541997).

The spelling of 210122320985 in words is "two hundred ten billion, one hundred twenty-two million, three hundred twenty thousand, nine hundred eighty-five".