122811373 has 2 divisors, whose sum is σ = 122811374. Its totient is φ = 122811372.

The previous prime is 122811371. The next prime is 122811407. The reversal of 122811373 is 373118221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121815369 + 996004 = 11037^2 + 998^2 .

It is a cyclic number.

It is not a de Polignac number, because 122811373 - 2¹ = 122811371 is a prime.

Together with 122811371, 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 (122811371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61405686 + 61405687.

It is an arithmetic number, because the mean of its divisors is an integer number (61405687).

Almost surely, 2^122811373 is an apocalyptic number.

It is an amenable number.

122811373 is a deficient number, since it is larger than the sum of its proper divisors (1).

122811373 is an equidigital number, since it uses as much as digits as its factorization.

122811373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 28.

The square root of 122811373 is about 11082.0292816794. The cubic root of 122811373 is about 497.0646316146.

Adding to 122811373 its reverse (373118221), we get a palindrome (495929594).

The spelling of 122811373 in words is "one hundred twenty-two million, eight hundred eleven thousand, three hundred seventy-three".