221220334210001 has 32 divisors (see below), whose sum is σ = 260903714426880. Its totient is φ = 183630058819200.

The previous prime is 221220334209989. The next prime is 221220334210061. The reversal of 221220334210001 is 100012433022122.

221220334210001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221220334210001 - 2³⁸ = 220945456303057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221220334210061) 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, 18131720 + ... + 27770486.

It is an arithmetic number, because the mean of its divisors is an integer number (8153241075840).

Almost surely, 2^{221220334210001} is an apocalyptic number.

It is an amenable number.

221220334210001 is a deficient number, since it is larger than the sum of its proper divisors (39683380216879).

221220334210001 is a wasteful number, since it uses less digits than its factorization.

221220334210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9639405.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 221220334210001 its reverse (100012433022122), we get a palindrome (321232767232123).

The spelling of 221220334210001 in words is "two hundred twenty-one trillion, two hundred twenty billion, three hundred thirty-four million, two hundred ten thousand, one".