12500054021 has 8 divisors (see below), whose sum is σ = 15384681984. Its totient is φ = 9890152560.

The previous prime is 12500054009. The next prime is 12500054027. The reversal of 12500054021 is 12045000521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12500054021 - 2¹⁴ = 12500037637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12500053984 and 12500054002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12500054027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68681525 + ... + 68681706.

It is an arithmetic number, because the mean of its divisors is an integer number (1923085248).

Almost surely, 2^12500054021 is an apocalyptic number.

It is an amenable number.

12500054021 is a deficient number, since it is larger than the sum of its proper divisors (2884627963).

12500054021 is a wasteful number, since it uses less digits than its factorization.

12500054021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137363251.

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 12500054021 its reverse (12045000521), we get a palindrome (24545054542).

The spelling of 12500054021 in words is "twelve billion, five hundred million, fifty-four thousand, twenty-one".