20110020220221 has 32 divisors (see below), whose sum is σ = 28688303443968. Its totient is φ = 12500930376000.

The previous prime is 20110020220211. The next prime is 20110020220253. The reversal of 20110020220221 is 12202202001102.

It is not a de Polignac number, because 20110020220221 - 2¹⁰ = 20110020219197 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20110020220221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110020220201) 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, 11538706 + ... + 13166691.

It is an arithmetic number, because the mean of its divisors is an integer number (896509482624).

Almost surely, 2^{20110020220221} is an apocalyptic number.

It is an amenable number.

20110020220221 is a deficient number, since it is larger than the sum of its proper divisors (8578283223747).

20110020220221 is a wasteful number, since it uses less digits than its factorization.

20110020220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24705721.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20110020220221 its reverse (12202202001102), we get a palindrome (32312222221323).

The spelling of 20110020220221 in words is "twenty trillion, one hundred ten billion, twenty million, two hundred twenty thousand, two hundred twenty-one".