12515030221444 has 12 divisors (see below), whose sum is σ = 22046344629568. Its totient is φ = 6216074613000.

The previous prime is 12515030221429. The next prime is 12515030221471. The reversal of 12515030221444 is 44412203051521.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10360123752 + ... + 10360124959.

Almost surely, 2^{12515030221444} is an apocalyptic number.

It is an amenable number.

12515030221444 is a deficient number, since it is larger than the sum of its proper divisors (9531314408124).

12515030221444 is a wasteful number, since it uses less digits than its factorization.

12515030221444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20720248866 (or 20720248864 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 12515030221444 its reverse (44412203051521), we get a palindrome (56927233272965).

The spelling of 12515030221444 in words is "twelve trillion, five hundred fifteen billion, thirty million, two hundred twenty-one thousand, four hundred forty-four".