12120263451 has 24 divisors (see below), whose sum is σ = 18211986000. Its totient is φ = 7757934912.

The previous prime is 12120263401. The next prime is 12120263453. The reversal of 12120263451 is 15436202121.

12120263451 is a `hidden beast` number, since 1 + 2 + 1 + 20 + 2 + 634 + 5 + 1 = 666.

12120263451 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 12120263451 - 2¹¹ = 12120261403 is a prime.

It is a super-2 number, since 2×12120263451² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12120263453) 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 23 ways as a sum of consecutive naturals, for example, 82996 + ... + 176433.

It is an arithmetic number, because the mean of its divisors is an integer number (758832750).

Almost surely, 2^12120263451 is an apocalyptic number.

12120263451 is a deficient number, since it is larger than the sum of its proper divisors (6091722549).

12120263451 is a wasteful number, since it uses less digits than its factorization.

12120263451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259643 (or 259640 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 12120263451 its reverse (15436202121), we get a palindrome (27556465572).

The spelling of 12120263451 in words is "twelve billion, one hundred twenty million, two hundred sixty-three thousand, four hundred fifty-one".