122513447 has 4 divisors (see below), whose sum is σ = 140015376. Its totient is φ = 105011520.

The previous prime is 122513423. The next prime is 122513449. The reversal of 122513447 is 744315221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744315221 = 13 ⋅57255017.

It is a cyclic number.

It is not a de Polignac number, because 122513447 - 2⁶ = 122513383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122513449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8750954 + ... + 8750967.

It is an arithmetic number, because the mean of its divisors is an integer number (35003844).

Almost surely, 2^122513447 is an apocalyptic number.

122513447 is a deficient number, since it is larger than the sum of its proper divisors (17501929).

122513447 is an equidigital number, since it uses as much as digits as its factorization.

122513447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17501928.

The product of its digits is 6720, while the sum is 29.

The square root of 122513447 is about 11068.5792674580. The cubic root of 122513447 is about 496.6623659723.

Adding to 122513447 its reverse (744315221), we get a palindrome (866828668).

The spelling of 122513447 in words is "one hundred twenty-two million, five hundred thirteen thousand, four hundred forty-seven".