12221003015 has 32 divisors (see below), whose sum is σ = 16744358400. Its totient is φ = 8488126080.

The previous prime is 12221002991. The next prime is 12221003033. The reversal of 12221003015 is 51030012221.

It is a happy number.

It is not a de Polignac number, because 12221003015 - 2¹⁸ = 12220740871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12221002984 and 12221003002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136070 + ... + 207260.

It is an arithmetic number, because the mean of its divisors is an integer number (523261200).

Almost surely, 2^12221003015 is an apocalyptic number.

12221003015 is a deficient number, since it is larger than the sum of its proper divisors (4523355385).

12221003015 is a wasteful number, since it uses less digits than its factorization.

12221003015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71367.

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 12221003015 its reverse (51030012221), we get a palindrome (63251015236).

The spelling of 12221003015 in words is "twelve billion, two hundred twenty-one million, three thousand, fifteen".