11331020121 has 8 divisors (see below), whose sum is σ = 15170716704. Its totient is φ = 7522668480.

The previous prime is 11331020111. The next prime is 11331020123. The reversal of 11331020121 is 12102013311.

It is a happy number.

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

It is not a de Polignac number, because 11331020121 - 2⁵ = 11331020089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11331020121.

It is not an unprimeable number, because it can be changed into a prime (11331020123) 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, 7835391 + ... + 7836836.

It is an arithmetic number, because the mean of its divisors is an integer number (1896339588).

Almost surely, 2^11331020121 is an apocalyptic number.

It is an amenable number.

11331020121 is a deficient number, since it is larger than the sum of its proper divisors (3839696583).

11331020121 is a wasteful number, since it uses less digits than its factorization.

11331020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15672471.

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

Adding to 11331020121 its reverse (12102013311), we get a palindrome (23433033432).

The spelling of 11331020121 in words is "eleven billion, three hundred thirty-one million, twenty thousand, one hundred twenty-one".