222102102212021 has 8 divisors (see below), whose sum is σ = 222343448869560. Its totient is φ = 221860829564352.

The previous prime is 222102102211963. The next prime is 222102102212027. The reversal of 222102102212021 is 120212201201222.

It can be written as a sum of positive squares in 4 ways, for example, as 634547662225 + 221467554549796 = 796585^2 + 14881786^2 .

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 222102102212021 - 2²² = 222102098017717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222102102211984 and 222102102212002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222102102212027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12496190 + ... + 24502223.

It is an arithmetic number, because the mean of its divisors is an integer number (27792931108695).

Almost surely, 2^{222102102212021} is an apocalyptic number.

It is an amenable number.

222102102212021 is a deficient number, since it is larger than the sum of its proper divisors (241346657539).

222102102212021 is a wasteful number, since it uses less digits than its factorization.

222102102212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37004935.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222102102212021 its reverse (120212201201222), we get a palindrome (342314303413243).

The spelling of 222102102212021 in words is "two hundred twenty-two trillion, one hundred two billion, one hundred two million, two hundred twelve thousand, twenty-one".