210202100221985 has 16 divisors (see below), whose sum is σ = 258110127310464. Its totient is φ = 164249987661312.

The previous prime is 210202100221933. The next prime is 210202100222027. The reversal of 210202100221985 is 589122001202012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 210202100221985 - 2⁶ = 210202100221921 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, 35381489 + ... + 40893201.

It is an arithmetic number, because the mean of its divisors is an integer number (16131882956904).

Almost surely, 2^{210202100221985} is an apocalyptic number.

It is an amenable number.

210202100221985 is a deficient number, since it is larger than the sum of its proper divisors (47908027088479).

210202100221985 is a wasteful number, since it uses less digits than its factorization.

210202100221985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5689144.

The product of its (nonzero) digits is 11520, while the sum is 35.

Adding to 210202100221985 its reverse (589122001202012), we get a palindrome (799324101423997).

The spelling of 210202100221985 in words is "two hundred ten trillion, two hundred two billion, one hundred million, two hundred twenty-one thousand, nine hundred eighty-five".