20121124142452 has 24 divisors (see below), whose sum is σ = 35314246452800. Its totient is φ = 10031370920640.

The previous prime is 20121124142417. The next prime is 20121124142461. The reversal of 20121124142452 is 25424142112102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1376574 + ... + 6491317.

Almost surely, 2^{20121124142452} is an apocalyptic number.

It is an amenable number.

20121124142452 is a deficient number, since it is larger than the sum of its proper divisors (15193122310348).

20121124142452 is a wasteful number, since it uses less digits than its factorization.

20121124142452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7869751 (or 7869749 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

Adding to 20121124142452 its reverse (25424142112102), we get a palindrome (45545266254554).

The spelling of 20121124142452 in words is "twenty trillion, one hundred twenty-one billion, one hundred twenty-four million, one hundred forty-two thousand, four hundred fifty-two".