201540212 has 6 divisors (see below), whose sum is σ = 352695378. Its totient is φ = 100770104.

The previous prime is 201540211. The next prime is 201540223. The reversal of 201540212 is 212045102.

It can be written as a sum of positive squares in only one way, i.e., 141229456 + 60310756 = 11884^2 + 7766^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201540211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25192523 + ... + 25192530.

It is an arithmetic number, because the mean of its divisors is an integer number (58782563).

Almost surely, 2^201540212 is an apocalyptic number.

It is an amenable number.

201540212 is a deficient number, since it is larger than the sum of its proper divisors (151155166).

201540212 is a wasteful number, since it uses less digits than its factorization.

201540212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50385057 (or 50385055 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 201540212 is about 14196.4859032086. The cubic root of 201540212 is about 586.3009128319.

Adding to 201540212 its reverse (212045102), we get a palindrome (413585314).

The spelling of 201540212 in words is "two hundred one million, five hundred forty thousand, two hundred twelve".