11210212011421 has 2 divisors, whose sum is σ = 11210212011422. Its totient is φ = 11210212011420.

The previous prime is 11210212011419. The next prime is 11210212011463. The reversal of 11210212011421 is 12411021201211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8823341508921 + 2386870502500 = 2970411^2 + 1544950^2 .

It is a cyclic number.

It is not a de Polignac number, because 11210212011421 - 2¹ = 11210212011419 is a prime.

Together with 11210212011419, 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 (11210212011521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605106005710 + 5605106005711.

It is an arithmetic number, because the mean of its divisors is an integer number (5605106005711).

Almost surely, 2^{11210212011421} is an apocalyptic number.

It is an amenable number.

11210212011421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11210212011421 is an equidigital number, since it uses as much as digits as its factorization.

11210212011421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11210212011421 its reverse (12411021201211), we get a palindrome (23621233212632).

The spelling of 11210212011421 in words is "eleven trillion, two hundred ten billion, two hundred twelve million, eleven thousand, four hundred twenty-one".