211211200011212 has 6 divisors (see below), whose sum is σ = 369619600019628. Its totient is φ = 105605600005604.

The previous prime is 211211200011209. The next prime is 211211200011247. The reversal of 211211200011212 is 212110002112112.

It is a super-2 number, since 2×211211200011212² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26401400001398 + ... + 26401400001405.

It is an arithmetic number, because the mean of its divisors is an integer number (61603266669938).

Almost surely, 2^{211211200011212} is an apocalyptic number.

It is an amenable number.

211211200011212 is a deficient number, since it is larger than the sum of its proper divisors (158408400008416).

211211200011212 is a wasteful number, since it uses less digits than its factorization.

211211200011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52802800002807 (or 52802800002805 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 211211200011212 its reverse (212110002112112), we get a palindrome (423321202123324).

The spelling of 211211200011212 in words is "two hundred eleven trillion, two hundred eleven billion, two hundred million, eleven thousand, two hundred twelve".