220110155502221 has 8 divisors (see below), whose sum is σ = 234542256371640. Its totient is φ = 205842992928768.

The previous prime is 220110155502161. The next prime is 220110155502229. The reversal of 220110155502221 is 122205551011022.

It can be written as a sum of positive squares in 4 ways, for example, as 72570992737321 + 147539162764900 = 8518861^2 + 12146570^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220110155502221 - 2²⁶ = 220110088393357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220110155502229) 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 7 ways as a sum of consecutive naturals, for example, 41234571236 + ... + 41234576573.

It is an arithmetic number, because the mean of its divisors is an integer number (29317782046455).

Almost surely, 2^{220110155502221} is an apocalyptic number.

It is an amenable number.

220110155502221 is a deficient number, since it is larger than the sum of its proper divisors (14432100869419).

220110155502221 is a wasteful number, since it uses less digits than its factorization.

220110155502221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82469147983.

The product of its (nonzero) digits is 4000, while the sum is 29.

The spelling of 220110155502221 in words is "two hundred twenty trillion, one hundred ten billion, one hundred fifty-five million, five hundred two thousand, two hundred twenty-one".