11013121078 has 8 divisors (see below), whose sum is σ = 16526165040. Its totient is φ = 5504399400.

The previous prime is 11013121013. The next prime is 11013121079. The reversal of 11013121078 is 87012131011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11013121079) 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, 1074193 + ... + 1084396.

It is an arithmetic number, because the mean of its divisors is an integer number (2065770630).

Almost surely, 2^11013121078 is an apocalyptic number.

11013121078 is a deficient number, since it is larger than the sum of its proper divisors (5513043962).

11013121078 is a wasteful number, since it uses less digits than its factorization.

11013121078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2161142.

The product of its (nonzero) digits is 336, while the sum is 25.

Adding to 11013121078 its reverse (87012131011), we get a palindrome (98025252089).

The spelling of 11013121078 in words is "eleven billion, thirteen million, one hundred twenty-one thousand, seventy-eight".