222000021010021 has 4 divisors (see below), whose sum is σ = 227414655668844. Its totient is φ = 216585386351200.

The previous prime is 222000021009967. The next prime is 222000021010057. The reversal of 222000021010021 is 120010120000222.

It is a happy number.

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 6309264830625 + 215690756179396 = 2511825^2 + 14686414^2 .

It is a cyclic number.

It is not a de Polignac number, because 222000021010021 - 2³⁹ = 221450265196133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222000021009983 and 222000021010010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222000021070021) 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, 2707317329350 + ... + 2707317329431.

It is an arithmetic number, because the mean of its divisors is an integer number (56853663917211).

Almost surely, 2^{222000021010021} is an apocalyptic number.

It is an amenable number.

222000021010021 is a deficient number, since it is larger than the sum of its proper divisors (5414634658823).

222000021010021 is an equidigital number, since it uses as much as digits as its factorization.

222000021010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5414634658822.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 222000021010021 its reverse (120010120000222), we get a palindrome (342010141010243).

The spelling of 222000021010021 in words is "two hundred twenty-two trillion, twenty-one million, ten thousand, twenty-one".