221201101222111 has 8 divisors (see below), whose sum is σ = 222785894685600. Its totient is φ = 219621689061600.

The previous prime is 221201101222097. The next prime is 221201101222223. The reversal of 221201101222111 is 111222101102122.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 221201101222111 - 2¹⁹ = 221201100697823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221201101322111) 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, 1345243240 + ... + 1345407661.

It is an arithmetic number, because the mean of its divisors is an integer number (27848236835700).

Almost surely, 2^{221201101222111} is an apocalyptic number.

221201101222111 is a deficient number, since it is larger than the sum of its proper divisors (1584793463489).

221201101222111 is a wasteful number, since it uses less digits than its factorization.

221201101222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690651489.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 221201101222111 its reverse (111222101102122), we get a palindrome (332423202324233).

The spelling of 221201101222111 in words is "two hundred twenty-one trillion, two hundred one billion, one hundred one million, two hundred twenty-two thousand, one hundred eleven".