220221001001 has 8 divisors (see below), whose sum is σ = 224341729440. Its totient is φ = 216113211648.

The previous prime is 220221000997. The next prime is 220221001037. The reversal of 220221001001 is 100100122022.

It is a happy number.

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 220221001001 - 2² = 220221000997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220221001801) 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, 3200411 + ... + 3268496.

It is an arithmetic number, because the mean of its divisors is an integer number (28042716180).

Almost surely, 2^220221001001 is an apocalyptic number.

It is an amenable number.

220221001001 is a deficient number, since it is larger than the sum of its proper divisors (4120728439).

220221001001 is an equidigital number, since it uses as much as digits as its factorization.

220221001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6469543.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 220221001001 its reverse (100100122022), we get a palindrome (320321123023).

It can be divided in two parts, 22022 and 1001001, that multiplied together give a palindrome (22044044022).

The spelling of 220221001001 in words is "two hundred twenty billion, two hundred twenty-one million, one thousand, one".