211612010085 has 128 divisors (see below), whose sum is σ = 468177408000. Its totient is φ = 88485094656.

The previous prime is 211612010069. The next prime is 211612010087. The reversal of 211612010085 is 580010216112.

It is not a de Polignac number, because 211612010085 - 2⁴ = 211612010069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211612010087) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 317494 + ... + 723896.

It is an arithmetic number, because the mean of its divisors is an integer number (3657636000).

Almost surely, 2^211612010085 is an apocalyptic number.

It is an amenable number.

211612010085 is an abundant number, since it is smaller than the sum of its proper divisors (256565397915).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211612010085 is a wasteful number, since it uses less digits than its factorization.

211612010085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406472 (or 406466 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

Adding to 211612010085 its reverse (580010216112), we get a palindrome (791622226197).

The spelling of 211612010085 in words is "two hundred eleven billion, six hundred twelve million, ten thousand, eighty-five".