221210221210001 has 32 divisors (see below), whose sum is σ = 235499019168000. Its totient is φ = 207190640627712.

The previous prime is 221210221209997. The next prime is 221210221210007. The reversal of 221210221210001 is 100012122012122.

It is a cyclic number.

It is not a de Polignac number, because 221210221210001 - 2² = 221210221209997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221210221210007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10849478315 + ... + 10849498703.

It is an arithmetic number, because the mean of its divisors is an integer number (7359344349000).

Almost surely, 2^{221210221210001} is an apocalyptic number.

It is an amenable number.

221210221210001 is a deficient number, since it is larger than the sum of its proper divisors (14288797957999).

221210221210001 is a wasteful number, since it uses less digits than its factorization.

221210221210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26361.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221210221210001 its reverse (100012122012122), we get a palindrome (321222343222123).

The spelling of 221210221210001 in words is "two hundred twenty-one trillion, two hundred ten billion, two hundred twenty-one million, two hundred ten thousand, one".