220222266717721 has 8 divisors (see below), whose sum is σ = 226301498622920. Its totient is φ = 214149733694208.

The previous prime is 220222266717671. The next prime is 220222266717811. The reversal of 220222266717721 is 127717662222022.

It can be written as a sum of positive squares in 4 ways, for example, as 100047285588496 + 120174981129225 = 10002364^2 + 10962435^2 .

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

It is not a de Polignac number, because 220222266717721 - 2⁴¹ = 218023243462169 is a prime.

It is a super-3 number, since 3×220222266717721³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220222266711721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1674653766 + ... + 1674785263.

It is an arithmetic number, because the mean of its divisors is an integer number (28287687327865).

Almost surely, 2^{220222266717721} is an apocalyptic number.

It is an amenable number.

220222266717721 is a deficient number, since it is larger than the sum of its proper divisors (6079231905199).

220222266717721 is a wasteful number, since it uses less digits than its factorization.

220222266717721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349440843.

The product of its (nonzero) digits is 1580544, while the sum is 49.

The spelling of 220222266717721 in words is "two hundred twenty trillion, two hundred twenty-two billion, two hundred sixty-six million, seven hundred seventeen thousand, seven hundred twenty-one".