11031230121 has 16 divisors (see below), whose sum is σ = 15668970240. Its totient is φ = 6883148880.

The previous prime is 11031230107. The next prime is 11031230129. The reversal of 11031230121 is 12103213011.

It is a happy number.

It is not a de Polignac number, because 11031230121 - 2³³ = 2441295529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11031230121.

It is not an unprimeable number, because it can be changed into a prime (11031230129) 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, 1161115 + ... + 1170576.

It is an arithmetic number, because the mean of its divisors is an integer number (979310640).

Almost surely, 2^11031230121 is an apocalyptic number.

It is an amenable number.

11031230121 is a deficient number, since it is larger than the sum of its proper divisors (4637740119).

11031230121 is a wasteful number, since it uses less digits than its factorization.

11031230121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331796.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11031230121 its reverse (12103213011), we get a palindrome (23134443132).

The spelling of 11031230121 in words is "eleven billion, thirty-one million, two hundred thirty thousand, one hundred twenty-one".