11421120231 has 32 divisors (see below), whose sum is σ = 17297510400. Its totient is φ = 7445640960.

The previous prime is 11421120211. The next prime is 11421120241. The reversal of 11421120231 is 13202112411.

11421120231 is a `hidden beast` number, since 1 + 1 + 421 + 12 + 0 + 231 = 666.

11421120231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11421120231 - 2⁶ = 11421120167 is a prime.

It is a super-2 number, since 2×11421120231² (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 (11421120211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 285495 + ... + 323031.

It is an arithmetic number, because the mean of its divisors is an integer number (540547200).

Almost surely, 2^11421120231 is an apocalyptic number.

11421120231 is a deficient number, since it is larger than the sum of its proper divisors (5876390169).

11421120231 is a wasteful number, since it uses less digits than its factorization.

11421120231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37796 (or 37790 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 11421120231 its reverse (13202112411), we get a palindrome (24623232642).

The spelling of 11421120231 in words is "eleven billion, four hundred twenty-one million, one hundred twenty thousand, two hundred thirty-one".