220222221001 has 4 divisors (see below), whose sum is σ = 220358078404. Its totient is φ = 220086363600.

The previous prime is 220222220983. The next prime is 220222221013. The reversal of 220222221001 is 100122222022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 176021363401 + 44200857600 = 419549^2 + 210240^2 .

It is a cyclic number.

It is not a de Polignac number, because 220222221001 - 2¹³ = 220222212809 is a prime.

It is a super-2 number, since 2×220222221001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220222225001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67926270 + ... + 67929511.

It is an arithmetic number, because the mean of its divisors is an integer number (55089519601).

Almost surely, 2^220222221001 is an apocalyptic number.

It is an amenable number.

220222221001 is a deficient number, since it is larger than the sum of its proper divisors (135857403).

220222221001 is a wasteful number, since it uses less digits than its factorization.

220222221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135857402.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 220222221001 its reverse (100122222022), we get a palindrome (320344443023).

The spelling of 220222221001 in words is "two hundred twenty billion, two hundred twenty-two million, two hundred twenty-one thousand, one".