221120210101211 has 8 divisors (see below), whose sum is σ = 221680628167680. Its totient is φ = 220560203657512.

The previous prime is 221120210101187. The next prime is 221120210101247. The reversal of 221120210101211 is 112101012021122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221120210101211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221120210101211.

It is not an unprimeable number, because it can be changed into a prime (221120210101411) 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, 101829935 + ... + 103978728.

It is an arithmetic number, because the mean of its divisors is an integer number (27710078520960).

Almost surely, 2^{221120210101211} is an apocalyptic number.

221120210101211 is a deficient number, since it is larger than the sum of its proper divisors (560418066469).

221120210101211 is a wasteful number, since it uses less digits than its factorization.

221120210101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205811385.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221120210101211 its reverse (112101012021122), we get a palindrome (333221222122333).

The spelling of 221120210101211 in words is "two hundred twenty-one trillion, one hundred twenty billion, two hundred ten million, one hundred one thousand, two hundred eleven".