21201122002213 has 2 divisors, whose sum is σ = 21201122002214. Its totient is φ = 21201122002212.

The previous prime is 21201122002211. The next prime is 21201122002241. The reversal of 21201122002213 is 31220022110212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16600882038724 + 4600239963489 = 4074418^2 + 2144817^2 .

It is a cyclic number.

It is not a de Polignac number, because 21201122002213 - 2¹ = 21201122002211 is a prime.

Together with 21201122002211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21201122002211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600561001106 + 10600561001107.

It is an arithmetic number, because the mean of its divisors is an integer number (10600561001107).

Almost surely, 2^{21201122002213} is an apocalyptic number.

It is an amenable number.

21201122002213 is a deficient number, since it is larger than the sum of its proper divisors (1).

21201122002213 is an equidigital number, since it uses as much as digits as its factorization.

21201122002213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21201122002213 its reverse (31220022110212), we get a palindrome (52421144112425).

The spelling of 21201122002213 in words is "twenty-one trillion, two hundred one billion, one hundred twenty-two million, two thousand, two hundred thirteen".