220002110222021 has 8 divisors (see below), whose sum is σ = 220054016222040. Its totient is φ = 219950207373312.

The previous prime is 220002110221979. The next prime is 220002110222203. The reversal of 220002110222021 is 120222011200022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17078837349025 + 202923272872996 = 4132655^2 + 14245114^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220002110222021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220002110522021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141893945 + ... + 143436033.

It is an arithmetic number, because the mean of its divisors is an integer number (27506752027755).

Almost surely, 2^{220002110222021} is an apocalyptic number.

It is an amenable number.

220002110222021 is a deficient number, since it is larger than the sum of its proper divisors (51906000019).

220002110222021 is a wasteful number, since it uses less digits than its factorization.

220002110222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575655.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 220002110222021 its reverse (120222011200022), we get a palindrome (340224121422043).

The spelling of 220002110222021 in words is "two hundred twenty trillion, two billion, one hundred ten million, two hundred twenty-two thousand, twenty-one".