11356121242 has 32 divisors (see below), whose sum is σ = 17467632000. Its totient is φ = 5535449280.

The previous prime is 11356121239. The next prime is 11356121243. The reversal of 11356121242 is 24212165311.

It is a super-2 number, since 2×11356121242² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11356121242.

It is not an unprimeable number, because it can be changed into a prime (11356121243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10166068 + ... + 10167184.

It is an arithmetic number, because the mean of its divisors is an integer number (545863500).

Almost surely, 2^11356121242 is an apocalyptic number.

11356121242 is a deficient number, since it is larger than the sum of its proper divisors (6111510758).

11356121242 is a wasteful number, since it uses less digits than its factorization.

11356121242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846.

The product of its digits is 2880, while the sum is 28.

Adding to 11356121242 its reverse (24212165311), we get a palindrome (35568286553).

The spelling of 11356121242 in words is "eleven billion, three hundred fifty-six million, one hundred twenty-one thousand, two hundred forty-two".