222102120022021 has 8 divisors (see below), whose sum is σ = 222666187411800. Its totient is φ = 221538155220480.

The previous prime is 222102120021949. The next prime is 222102120022039. The reversal of 222102120022021 is 120220021201222.

It can be written as a sum of positive squares in 4 ways, for example, as 72998825284225 + 149103294737796 = 8543935^2 + 12210786^2 .

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 222102120022021 - 2⁴¹ = 219903096766469 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 222102120022021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222102120022051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21310660 + ... + 29972461.

It is an arithmetic number, because the mean of its divisors is an integer number (27833273426475).

Almost surely, 2^{222102120022021} is an apocalyptic number.

It is an amenable number.

222102120022021 is a deficient number, since it is larger than the sum of its proper divisors (564067389779).

222102120022021 is a wasteful number, since it uses less digits than its factorization.

222102120022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51294119.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 222102120022021 its reverse (120220021201222), we get a palindrome (342322141223243).

The spelling of 222102120022021 in words is "two hundred twenty-two trillion, one hundred two billion, one hundred twenty million, twenty-two thousand, twenty-one".