221210021222011 has 8 divisors (see below), whose sum is σ = 225936319426560. Its totient is φ = 216484543934568.

The previous prime is 221210021221901. The next prime is 221210021222023. The reversal of 221210021222011 is 110222120012122.

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 221210021222011 - 2⁹ = 221210021221499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221210021222011.

It is not an unprimeable number, because it can be changed into a prime (221210021226011) 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, 204684571 + ... + 205762468.

It is an arithmetic number, because the mean of its divisors is an integer number (28242039928320).

Almost surely, 2^{221210021222011} is an apocalyptic number.

221210021222011 is a deficient number, since it is larger than the sum of its proper divisors (4726298204549).

221210021222011 is a wasteful number, since it uses less digits than its factorization.

221210021222011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410458553.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221210021222011 its reverse (110222120012122), we get a palindrome (331432141234133).

The spelling of 221210021222011 in words is "two hundred twenty-one trillion, two hundred ten billion, twenty-one million, two hundred twenty-two thousand, eleven".