201212211100212 has 72 divisors (see below), whose sum is σ = 547759923459840. Its totient is φ = 61909689579840.

The previous prime is 201212211100177. The next prime is 201212211100217. The reversal of 201212211100212 is 212001112212102.

201212211100212 is a `hidden beast` number, since 2 + 0 + 121 + 221 + 110 + 0 + 212 = 666.

It is a super-4 number, since 4×201212211100212⁴ (a number of 58 digits) contains 4444 as substring.

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 (201212211100217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10417137 + ... + 22604007.

It is an arithmetic number, because the mean of its divisors is an integer number (7607776714720).

Almost surely, 2^{201212211100212} is an apocalyptic number.

It is an amenable number.

201212211100212 is an abundant number, since it is smaller than the sum of its proper divisors (346547712359628).

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

201212211100212 is a wasteful number, since it uses less digits than its factorization.

201212211100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12222173 (or 12222168 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 201212211100212 its reverse (212001112212102), we get a palindrome (413213323312314).

The spelling of 201212211100212 in words is "two hundred one trillion, two hundred twelve billion, two hundred eleven million, one hundred thousand, two hundred twelve".