1500012113221 has 16 divisors (see below), whose sum is σ = 1587579652800. Its totient is φ = 1413324868608.

The previous prime is 1500012113167. The next prime is 1500012113227. The reversal of 1500012113221 is 1223112100051.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1500012113221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1500012113227) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2694726 + ... + 3203368.

It is an arithmetic number, because the mean of its divisors is an integer number (99223728300).

Almost surely, 2^{1500012113221} is an apocalyptic number.

It is an amenable number.

1500012113221 is a deficient number, since it is larger than the sum of its proper divisors (87567539579).

1500012113221 is a wasteful number, since it uses less digits than its factorization.

1500012113221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509508.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 1500012113221 its reverse (1223112100051), we get a palindrome (2723124213272).

The spelling of 1500012113221 in words is "one trillion, five hundred billion, twelve million, one hundred thirteen thousand, two hundred twenty-one".