221111220009 has 8 divisors (see below), whose sum is σ = 295775270560. Its totient is φ = 146927324736.

The previous prime is 221111219971. The next prime is 221111220013. The reversal of 221111220009 is 900022111122.

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

It is not a de Polignac number, because 221111220009 - 2¹³ = 221111211817 is a prime.

It is a super-2 number, since 2×221111220009² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221111220019) 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, 120037744 + ... + 120039585.

It is an arithmetic number, because the mean of its divisors is an integer number (36971908820).

Almost surely, 2^221111220009 is an apocalyptic number.

It is an amenable number.

221111220009 is a deficient number, since it is larger than the sum of its proper divisors (74664050551).

221111220009 is a wasteful number, since it uses less digits than its factorization.

221111220009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240077639.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 221111220009 in words is "two hundred twenty-one billion, one hundred eleven million, two hundred twenty thousand, nine".