212012022221211 has 8 divisors (see below), whose sum is σ = 288697221748224. Its totient is φ = 138334085420840.

The previous prime is 212012022221203. The next prime is 212012022221257. The reversal of 212012022221211 is 112122220210212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212012022221211 - 2³ = 212012022221203 is a prime.

It is a super-4 number, since 4×212012022221211⁴ (a number of 58 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is not an unprimeable number, because it can be changed into a prime (212012022220211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 751815681495 + ... + 751815681776.

It is an arithmetic number, because the mean of its divisors is an integer number (36087152718528).

Almost surely, 2^{212012022221211} is an apocalyptic number.

212012022221211 is a deficient number, since it is larger than the sum of its proper divisors (76685199527013).

212012022221211 is a wasteful number, since it uses less digits than its factorization.

212012022221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503631363321.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 212012022221211 its reverse (112122220210212), we get a palindrome (324134242431423).

The spelling of 212012022221211 in words is "two hundred twelve trillion, twelve billion, twenty-two million, two hundred twenty-one thousand, two hundred eleven".