113122001 has 2 divisors, whose sum is σ = 113122002. Its totient is φ = 113122000.

The previous prime is 113121979. The next prime is 113122003. The reversal of 113122001 is 100221311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57395776 + 55726225 = 7576^2 + 7465^2 .

It is an emirp because it is prime and its reverse (100221311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113122001 - 2¹⁰ = 113120977 is a prime.

It is a super-2 number, since 2×113122001² = 25593174220488002, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 113122003, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (113122003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56561000 + 56561001.

It is an arithmetic number, because the mean of its divisors is an integer number (56561001).

Almost surely, 2^113122001 is an apocalyptic number.

It is an amenable number.

113122001 is a deficient number, since it is larger than the sum of its proper divisors (1).

113122001 is an equidigital number, since it uses as much as digits as its factorization.

113122001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 113122001 is about 10635.8827090186. The cubic root of 113122001 is about 483.6327396859.

Adding to 113122001 its reverse (100221311), we get a palindrome (213343312).

It can be divided in two parts, 1131 and 22001, that added together give a palindrome (23132).

The spelling of 113122001 in words is "one hundred thirteen million, one hundred twenty-two thousand, one".