201212000011170 has 160 divisors (see below), whose sum is σ = 560910238922880. Its totient is φ = 51717139856640.

The previous prime is 201212000011151. The next prime is 201212000011171. The reversal of 201212000011170 is 71110000212102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (201212000011171) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 33742230 + ... + 39255089.

It is an arithmetic number, because the mean of its divisors is an integer number (3505688993268).

Almost surely, 2^{201212000011170} is an apocalyptic number.

201212000011170 is an abundant number, since it is smaller than the sum of its proper divisors (359698238911710).

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

201212000011170 is a wasteful number, since it uses less digits than its factorization.

201212000011170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72997462 (or 72997453 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 18.

Adding to 201212000011170 its reverse (71110000212102), we get a palindrome (272322000223272).

The spelling of 201212000011170 in words is "two hundred one trillion, two hundred twelve billion, eleven thousand, one hundred seventy".