211021321000012 has 12 divisors (see below), whose sum is σ = 369415225629520. Its totient is φ = 105474113677296.

The previous prime is 211021320999947. The next prime is 211021321000019. The reversal of 211021321000012 is 210000123120112.

It is a self number, because there is not a number n which added to its sum of digits gives 211021321000012.

It is not an unprimeable number, because it can be changed into a prime (211021321000019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9136692687 + ... + 9136715782.

Almost surely, 2^{211021321000012} is an apocalyptic number.

It is an amenable number.

211021321000012 is a deficient number, since it is larger than the sum of its proper divisors (158393904629508).

211021321000012 is a wasteful number, since it uses less digits than its factorization.

211021321000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18273411360 (or 18273411358 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 211021321000012 its reverse (210000123120112), we get a palindrome (421021444120124).

The spelling of 211021321000012 in words is "two hundred eleven trillion, twenty-one billion, three hundred twenty-one million, twelve", and thus it is an aban number.