221001211001230 has 64 divisors (see below), whose sum is σ = 434212926255360. Its totient is φ = 80318363097600.

The previous prime is 221001211001213. The next prime is 221001211001237. The reversal of 221001211001230 is 32100112100122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221001211001237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1752982657 + ... + 1753108723.

It is an arithmetic number, because the mean of its divisors is an integer number (6784576972740).

Almost surely, 2^{221001211001230} is an apocalyptic number.

221001211001230 is a deficient number, since it is larger than the sum of its proper divisors (213211715254130).

221001211001230 is a wasteful number, since it uses less digits than its factorization.

221001211001230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135025.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 221001211001230 its reverse (32100112100122), we get a palindrome (253101323101352).

The spelling of 221001211001230 in words is "two hundred twenty-one trillion, one billion, two hundred eleven million, one thousand, two hundred thirty".