212101211101212 has 96 divisors (see below), whose sum is σ = 567683189964800. Its totient is φ = 68413392244800.

The previous prime is 212101211101193. The next prime is 212101211101217. The reversal of 212101211101212 is 212101112101212.

It is a happy number.

212101211101212 is a `hidden beast` number, since 21 + 210 + 1 + 211 + 10 + 1 + 212 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212101211101217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33185637 + ... + 39057507.

Almost surely, 2^{212101211101212} is an apocalyptic number.

It is an amenable number.

212101211101212 is an abundant number, since it is smaller than the sum of its proper divisors (355581978863588).

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

212101211101212 is a wasteful number, since it uses less digits than its factorization.

212101211101212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5882704 (or 5882696 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 212101211101212 its reverse (212101112101212), we get a palindrome (424202323202424).

The spelling of 212101211101212 in words is "two hundred twelve trillion, one hundred one billion, two hundred eleven million, one hundred one thousand, two hundred twelve".