11330121231 has 96 divisors (see below), whose sum is σ = 19595476992. Its totient is φ = 6218311680.

The previous prime is 11330121221. The next prime is 11330121233. The reversal of 11330121231 is 13212103311.

11330121231 is a `hidden beast` number, since 113 + 301 + 21 + 231 = 666.

It is not a de Polignac number, because 11330121231 - 2²³ = 11321732623 is a prime.

It is a super-2 number, since 2×11330121231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11330121233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16834911 + ... + 16835583.

It is an arithmetic number, because the mean of its divisors is an integer number (204119552).

Almost surely, 2^11330121231 is an apocalyptic number.

11330121231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11330121231 is a deficient number, since it is larger than the sum of its proper divisors (8265355761).

11330121231 is a wasteful number, since it uses less digits than its factorization.

11330121231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933 (or 930 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 11330121231 its reverse (13212103311), we get a palindrome (24542224542).

The spelling of 11330121231 in words is "eleven billion, three hundred thirty million, one hundred twenty-one thousand, two hundred thirty-one".