21312122002011 has 6 divisors (see below), whose sum is σ = 30784176225140. Its totient is φ = 14208081334668.

The previous prime is 21312122002009. The next prime is 21312122002049. The reversal of 21312122002011 is 11020022121312.

21312122002011 is a `hidden beast` number, since 21 + 31 + 212 + 200 + 201 + 1 = 666.

It is not a de Polignac number, because 21312122002011 - 2¹ = 21312122002009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21312122002081) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1184006777881 + ... + 1184006777898.

Almost surely, 2^{21312122002011} is an apocalyptic number.

21312122002011 is a deficient number, since it is larger than the sum of its proper divisors (9472054223129).

21312122002011 is a wasteful number, since it uses less digits than its factorization.

21312122002011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2368013555785 (or 2368013555782 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 21312122002011 its reverse (11020022121312), we get a palindrome (32332144123323).

The spelling of 21312122002011 in words is "twenty-one trillion, three hundred twelve billion, one hundred twenty-two million, two thousand, eleven".