201612 has 24 divisors (see below), whose sum is σ = 480816. Its totient is φ = 65728.

The previous prime is 201611. The next prime is 201623. The reversal of 201612 is 216102.

201612 is nontrivially palindromic in base 5.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an Ulam number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (201611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478 + ... + 794.

It is an arithmetic number, because the mean of its divisors is an integer number (20034).

2²⁰¹⁶¹² is an apocalyptic number.

It is an amenable number.

201612 is an abundant number, since it is smaller than the sum of its proper divisors (279204).

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

201612 is a wasteful number, since it uses less digits than its factorization.

201612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 375 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 201612 is about 449.0122492761. The cubic root of 201612 is about 58.6370517425.

Adding to 201612 its reverse (216102), we get a palindrome (417714).

The spelling of 201612 in words is "two hundred one thousand, six hundred twelve".