13001121238 has 16 divisors (see below), whose sum is σ = 22831238304. Its totient is φ = 5436008640.

The previous prime is 13001121209. The next prime is 13001121239. The reversal of 13001121238 is 83212110031.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13001121239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11324445 + ... + 11325592.

It is an arithmetic number, because the mean of its divisors is an integer number (1426952394).

Almost surely, 2^13001121238 is an apocalyptic number.

13001121238 is a deficient number, since it is larger than the sum of its proper divisors (9830117066).

13001121238 is a wasteful number, since it uses less digits than its factorization.

13001121238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22650087.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 13001121238 its reverse (83212110031), we get a palindrome (96213231269).

The spelling of 13001121238 in words is "thirteen billion, one million, one hundred twenty-one thousand, two hundred thirty-eight".