220221010111001 has 12 divisors (see below), whose sum is σ = 233951069003520. Its totient is φ = 207254543065920.

The previous prime is 220221010110989. The next prime is 220221010111007. The reversal of 220221010111001 is 100111010122022.

It is not a de Polignac number, because 220221010111001 - 2¹⁸ = 220221009848857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220221010111007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17707721 + ... + 27459158.

It is an arithmetic number, because the mean of its divisors is an integer number (19495922416960).

Almost surely, 2^{220221010111001} is an apocalyptic number.

It is an amenable number.

220221010111001 is a deficient number, since it is larger than the sum of its proper divisors (13730058892519).

220221010111001 is a wasteful number, since it uses less digits than its factorization.

220221010111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45183784 (or 45183767 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 220221010111001 its reverse (100111010122022), we get a palindrome (320332020233023).

The spelling of 220221010111001 in words is "two hundred twenty trillion, two hundred twenty-one billion, ten million, one hundred eleven thousand, one".