20103211213 has 2 divisors, whose sum is σ = 20103211214. Its totient is φ = 20103211212.

The previous prime is 20103211211. The next prime is 20103211217. The reversal of 20103211213 is 31211230102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19956365289 + 146845924 = 141267^2 + 12118^2 .

It is a cyclic number.

It is not a de Polignac number, because 20103211213 - 2¹ = 20103211211 is a prime.

Together with 20103211211, 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 (20103211211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051605606 + 10051605607.

It is an arithmetic number, because the mean of its divisors is an integer number (10051605607).

Almost surely, 2^20103211213 is an apocalyptic number.

It is an amenable number.

20103211213 is a deficient number, since it is larger than the sum of its proper divisors (1).

20103211213 is an equidigital number, since it uses as much as digits as its factorization.

20103211213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20103211213 its reverse (31211230102), we get a palindrome (51314441315).

The spelling of 20103211213 in words is "twenty billion, one hundred three million, two hundred eleven thousand, two hundred thirteen".