21210003143111 has 2 divisors, whose sum is σ = 21210003143112. Its totient is φ = 21210003143110.

The previous prime is 21210003143089. The next prime is 21210003143137. The reversal of 21210003143111 is 11134130001212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21210003143111 - 2¹⁸ = 21210002880967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21210003143171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10605001571555 + 10605001571556.

It is an arithmetic number, because the mean of its divisors is an integer number (10605001571556).

Almost surely, 2^{21210003143111} is an apocalyptic number.

21210003143111 is a deficient number, since it is larger than the sum of its proper divisors (1).

21210003143111 is an equidigital number, since it uses as much as digits as its factorization.

21210003143111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 21210003143111 its reverse (11134130001212), we get a palindrome (32344133144323).

The spelling of 21210003143111 in words is "twenty-one trillion, two hundred ten billion, three million, one hundred forty-three thousand, one hundred eleven".