11042120121 has 8 divisors (see below), whose sum is σ = 14942570784. Its totient is φ = 7251541440.

The previous prime is 11042120119. The next prime is 11042120171. The reversal of 11042120121 is 12102124011.

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

It is not a de Polignac number, because 11042120121 - 2¹ = 11042120119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11042120121.

It is not an unprimeable number, because it can be changed into a prime (11042120171) 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, 27467760 + ... + 27468161.

It is an arithmetic number, because the mean of its divisors is an integer number (1867821348).

Almost surely, 2^11042120121 is an apocalyptic number.

It is an amenable number.

11042120121 is a deficient number, since it is larger than the sum of its proper divisors (3900450663).

11042120121 is an equidigital number, since it uses as much as digits as its factorization.

11042120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54935991.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11042120121 its reverse (12102124011), we get a palindrome (23144244132).

The spelling of 11042120121 in words is "eleven billion, forty-two million, one hundred twenty thousand, one hundred twenty-one".