221012002005 has 8 divisors (see below), whose sum is σ = 353619203232. Its totient is φ = 117873067728.

The previous prime is 221012001967. The next prime is 221012002021. The reversal of 221012002005 is 500200210122.

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

It is a de Polignac number, because none of the positive numbers 2^k-221012002005 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 14734133467 = 221012002005 / (2 + 2 + 1 + 0 + 1 + 2 + 0 + 0 + 2 + 0 + 0 + 5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7367066719 + ... + 7367066748.

It is an arithmetic number, because the mean of its divisors is an integer number (44202400404).

Almost surely, 2^221012002005 is an apocalyptic number.

It is an amenable number.

221012002005 is a deficient number, since it is larger than the sum of its proper divisors (132607201227).

221012002005 is a wasteful number, since it uses less digits than its factorization.

221012002005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14734133475.

The product of its (nonzero) digits is 80, while the sum is 15.

Adding to 221012002005 its reverse (500200210122), we get a palindrome (721212212127).

The spelling of 221012002005 in words is "two hundred twenty-one billion, twelve million, two thousand, five".