122988013 has 4 divisors (see below), whose sum is σ = 130222620. Its totient is φ = 115753408.

The previous prime is 122988011. The next prime is 122988053. The reversal of 122988013 is 310889221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310889221 = 463 ⋅671467.

It can be written as a sum of positive squares in 2 ways, for example, as 111133764 + 11854249 = 10542^2 + 3443^2 .

It is not a de Polignac number, because 122988013 - 2¹ = 122988011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122988013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122988011) 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, 3617278 + ... + 3617311.

It is an arithmetic number, because the mean of its divisors is an integer number (32555655).

Almost surely, 2^122988013 is an apocalyptic number.

It is an amenable number.

122988013 is a deficient number, since it is larger than the sum of its proper divisors (7234607).

122988013 is an equidigital number, since it uses as much as digits as its factorization.

122988013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7234606.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 122988013 is about 11089.9960775466. The cubic root of 122988013 is about 497.3028273477.

The spelling of 122988013 in words is "one hundred twenty-two million, nine hundred eighty-eight thousand, thirteen".