213111123373 has 2 divisors, whose sum is σ = 213111123374. Its totient is φ = 213111123372.

The previous prime is 213111123359. The next prime is 213111123409. The reversal of 213111123373 is 373321111312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197636260969 + 15474862404 = 444563^2 + 124398^2 .

It is a cyclic number.

It is not a de Polignac number, because 213111123373 - 2¹³ = 213111115181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213111123473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106555561686 + 106555561687.

It is an arithmetic number, because the mean of its divisors is an integer number (106555561687).

Almost surely, 2^213111123373 is an apocalyptic number.

It is an amenable number.

213111123373 is a deficient number, since it is larger than the sum of its proper divisors (1).

213111123373 is an equidigital number, since it uses as much as digits as its factorization.

213111123373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 28.

Adding to 213111123373 its reverse (373321111312), we get a palindrome (586432234685).

The spelling of 213111123373 in words is "two hundred thirteen billion, one hundred eleven million, one hundred twenty-three thousand, three hundred seventy-three".