201101212121212 has 12 divisors (see below), whose sum is σ = 378998438228536. Its totient is φ = 92815944055920.

The previous prime is 201101212121207. The next prime is 201101212121219. The reversal of 201101212121212 is 212121212101102.

It is a happy number.

201101212121212 is a modest number, since divided by 12121212 gives 2011012 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 201101212121212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201101212121219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1933665501114 + ... + 1933665501217.

Almost surely, 2^{201101212121212} is an apocalyptic number.

It is an amenable number.

201101212121212 is a deficient number, since it is larger than the sum of its proper divisors (177897226107324).

201101212121212 is a wasteful number, since it uses less digits than its factorization.

201101212121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3867331002348 (or 3867331002346 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 201101212121212 its reverse (212121212101102), we get a palindrome (413222424222314).

The spelling of 201101212121212 in words is "two hundred one trillion, one hundred one billion, two hundred twelve million, one hundred twenty-one thousand, two hundred twelve".