2230220221021 has 4 divisors (see below), whose sum is σ = 2401775622652. Its totient is φ = 2058664819392.

The previous prime is 2230220221013. The next prime is 2230220221043. The reversal of 2230220221021 is 1201220220322.

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 1082452968100 + 1147767252921 = 1040410^2 + 1071339^2 .

It is a cyclic number.

It is not a de Polignac number, because 2230220221021 - 2³ = 2230220221013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2230220221021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2230220221051) 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 3 ways as a sum of consecutive naturals, for example, 85777700796 + ... + 85777700821.

It is an arithmetic number, because the mean of its divisors is an integer number (600443905663).

Almost surely, 2^{2230220221021} is an apocalyptic number.

It is an amenable number.

2230220221021 is a deficient number, since it is larger than the sum of its proper divisors (171555401631).

2230220221021 is a wasteful number, since it uses less digits than its factorization.

2230220221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171555401630.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 2230220221021 its reverse (1201220220322), we get a palindrome (3431440441343).

The spelling of 2230220221021 in words is "two trillion, two hundred thirty billion, two hundred twenty million, two hundred twenty-one thousand, twenty-one".