222022220102021 has 4 divisors (see below), whose sum is σ = 222030479576844. Its totient is φ = 222013960627200.

The previous prime is 222022220102017. The next prime is 222022220102057. The reversal of 222022220102021 is 120201022220222.

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 67367751021796 + 154654469080225 = 8207786^2 + 12436015^2 .

It is a cyclic number.

It is not a de Polignac number, because 222022220102021 - 2² = 222022220102017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222022220101984 and 222022220102002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222022220102321) 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, 4129697090 + ... + 4129750851.

It is an arithmetic number, because the mean of its divisors is an integer number (55507619894211).

Almost surely, 2^{222022220102021} is an apocalyptic number.

It is an amenable number.

222022220102021 is a deficient number, since it is larger than the sum of its proper divisors (8259474823).

222022220102021 is an equidigital number, since it uses as much as digits as its factorization.

222022220102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8259474822.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 222022220102021 its reverse (120201022220222), we get a palindrome (342223242322243).

The spelling of 222022220102021 in words is "two hundred twenty-two trillion, twenty-two billion, two hundred twenty million, one hundred two thousand, twenty-one".