210102012111985 has 32 divisors (see below), whose sum is σ = 289226472579072. Its totient is φ = 143526751796160.

The previous prime is 210102012111983. The next prime is 210102012112019. The reversal of 210102012111985 is 589111210201012.

It is a happy number.

It is not a de Polignac number, because 210102012111985 - 2¹ = 210102012111983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210102012111985.

It is not an unprimeable number, because it can be changed into a prime (210102012111983) 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, 117552234 + ... + 119326156.

It is an arithmetic number, because the mean of its divisors is an integer number (9038327268096).

Almost surely, 2^{210102012111985} is an apocalyptic number.

It is an amenable number.

210102012111985 is a deficient number, since it is larger than the sum of its proper divisors (79124460467087).

210102012111985 is a wasteful number, since it uses less digits than its factorization.

210102012111985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786693.

The product of its (nonzero) digits is 2880, while the sum is 34.

Adding to 210102012111985 its reverse (589111210201012), we get a palindrome (799213222312997).

The spelling of 210102012111985 in words is "two hundred ten trillion, one hundred two billion, twelve million, one hundred eleven thousand, nine hundred eighty-five".