11331121023121 has 16 divisors (see below), whose sum is σ = 11659889058048. Its totient is φ = 11006320492800.

The previous prime is 11331121023119. The next prime is 11331121023199. The reversal of 11331121023121 is 12132012113311.

It is a cyclic number.

It is not a de Polignac number, because 11331121023121 - 2¹ = 11331121023119 is a prime.

It is a super-2 number, since 2×11331121023121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11331121023092 and 11331121023101.

It is not an unprimeable number, because it can be changed into a prime (11331121003121) 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, 1611706 + ... + 5025916.

It is an arithmetic number, because the mean of its divisors is an integer number (728743066128).

Almost surely, 2^{11331121023121} is an apocalyptic number.

It is an amenable number.

11331121023121 is a deficient number, since it is larger than the sum of its proper divisors (328768034927).

11331121023121 is a wasteful number, since it uses less digits than its factorization.

11331121023121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3414792.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 11331121023121 its reverse (12132012113311), we get a palindrome (23463133136432).

The spelling of 11331121023121 in words is "eleven trillion, three hundred thirty-one billion, one hundred twenty-one million, twenty-three thousand, one hundred twenty-one".