221210212110011 has 4 divisors (see below), whose sum is σ = 221211114330024. Its totient is φ = 221209309890000.

The previous prime is 221210212109959. The next prime is 221210212110047. The reversal of 221210212110011 is 110011212012122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221210212110011 - 2⁶ = 221210212109947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221210212116011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450742130 + ... + 451232631.

It is an arithmetic number, because the mean of its divisors is an integer number (55302778582506).

Almost surely, 2^{221210212110011} is an apocalyptic number.

221210212110011 is a deficient number, since it is larger than the sum of its proper divisors (902220013).

221210212110011 is an equidigital number, since it uses as much as digits as its factorization.

221210212110011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902220012.

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

Adding to 221210212110011 its reverse (110011212012122), we get a palindrome (331221424122133).

The spelling of 221210212110011 in words is "two hundred twenty-one trillion, two hundred ten billion, two hundred twelve million, one hundred ten thousand, eleven".