220100221221 has 8 divisors (see below), whose sum is σ = 293470076160. Its totient is φ = 146731923552.

The previous prime is 220100221219. The next prime is 220100221223. The reversal of 220100221221 is 122122001022.

It is an interprime number because it is at equal distance from previous prime (220100221219) and next prime (220100221223).

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

It is not a de Polignac number, because 220100221221 - 2¹ = 220100221219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220100221221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220100221223) 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, 5461 + ... + 663498.

It is an arithmetic number, because the mean of its divisors is an integer number (36683759520).

Almost surely, 2^220100221221 is an apocalyptic number.

It is an amenable number.

220100221221 is a deficient number, since it is larger than the sum of its proper divisors (73369854939).

220100221221 is a wasteful number, since it uses less digits than its factorization.

220100221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778635.

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

Adding to 220100221221 its reverse (122122001022), we get a palindrome (342222222243).

The spelling of 220100221221 in words is "two hundred twenty billion, one hundred million, two hundred twenty-one thousand, two hundred twenty-one".