210321323011 has 2 divisors, whose sum is σ = 210321323012. Its totient is φ = 210321323010.

The previous prime is 210321322957. The next prime is 210321323059. The reversal of 210321323011 is 110323123012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210321323011 is a prime.

It is a super-2 number, since 2×210321323011² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 210321323011.

It is not a weakly prime, because it can be changed into another prime (210321323411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105160661505 + 105160661506.

It is an arithmetic number, because the mean of its divisors is an integer number (105160661506).

Almost surely, 2^210321323011 is an apocalyptic number.

210321323011 is a deficient number, since it is larger than the sum of its proper divisors (1).

210321323011 is an equidigital number, since it uses as much as digits as its factorization.

210321323011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 210321323011 its reverse (110323123012), we get a palindrome (320644446023).

The spelling of 210321323011 in words is "two hundred ten billion, three hundred twenty-one million, three hundred twenty-three thousand, eleven".