211021122012312 has 32 divisors (see below), whose sum is σ = 528203301756480. Its totient is φ = 70253641107360.

The previous prime is 211021122012241. The next prime is 211021122012359. The reversal of 211021122012312 is 213210221120112.

It is a congruent number.

It is an unprimeable number.

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, 5420786178 + ... + 5420825105.

It is an arithmetic number, because the mean of its divisors is an integer number (16506353179890).

Almost surely, 2^{211021122012312} is an apocalyptic number.

It is an amenable number.

211021122012312 is an abundant number, since it is smaller than the sum of its proper divisors (317182179744168).

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

211021122012312 is a wasteful number, since it uses less digits than its factorization.

211021122012312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10841612103 (or 10841612099 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 211021122012312 its reverse (213210221120112), we get a palindrome (424231343132424).

The spelling of 211021122012312 in words is "two hundred eleven trillion, twenty-one billion, one hundred twenty-two million, twelve thousand, three hundred twelve".