211211321312 has 12 divisors (see below), whose sum is σ = 415822288896. Its totient is φ = 105605660640.

The previous prime is 211211321287. The next prime is 211211321323. The reversal of 211211321312 is 213123112112.

It is a super-2 number, since 2×211211321312² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3300176864 + ... + 3300176927.

It is an arithmetic number, because the mean of its divisors is an integer number (34651857408).

Almost surely, 2^211211321312 is an apocalyptic number.

It is an amenable number.

211211321312 is a deficient number, since it is larger than the sum of its proper divisors (204610967584).

211211321312 is an equidigital number, since it uses as much as digits as its factorization.

211211321312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6600353801 (or 6600353793 counting only the distinct ones).

The product of its digits is 144, while the sum is 20.

Adding to 211211321312 its reverse (213123112112), we get a palindrome (424334433424).

The spelling of 211211321312 in words is "two hundred eleven billion, two hundred eleven million, three hundred twenty-one thousand, three hundred twelve".