220222102021 has 4 divisors (see below), whose sum is σ = 225593372844. Its totient is φ = 214850831200.

The previous prime is 220222101997. The next prime is 220222102039. The reversal of 220222102021 is 120201222022.

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 61946232100 + 158275869921 = 248890^2 + 397839^2 .

It is a cyclic number.

It is not a de Polignac number, because 220222102021 - 2⁵ = 220222101989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220222101986 and 220222102004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220222402021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2685635350 + ... + 2685635431.

It is an arithmetic number, because the mean of its divisors is an integer number (56398343211).

Almost surely, 2^220222102021 is an apocalyptic number.

It is an amenable number.

220222102021 is a deficient number, since it is larger than the sum of its proper divisors (5371270823).

220222102021 is an equidigital number, since it uses as much as digits as its factorization.

220222102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5371270822.

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

Adding to 220222102021 its reverse (120201222022), we get a palindrome (340423324043).

The spelling of 220222102021 in words is "two hundred twenty billion, two hundred twenty-two million, one hundred two thousand, twenty-one".