222102000220021 has 8 divisors (see below), whose sum is σ = 222144124466264. Its totient is φ = 222059878133760.

The previous prime is 222102000220013. The next prime is 222102000220081. The reversal of 222102000220021 is 120022000201222.

It can be written as a sum of positive squares in 4 ways, for example, as 151466211879921 + 70635788340100 = 12307161^2 + 8404510^2 .

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 222102000220021 - 2³ = 222102000220013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222102000219977 and 222102000220004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222102000220081) 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 7 ways as a sum of consecutive naturals, for example, 213105301 + ... + 214144981.

It is an arithmetic number, because the mean of its divisors is an integer number (27768015558283).

Almost surely, 2^{222102000220021} is an apocalyptic number.

It is an amenable number.

222102000220021 is a deficient number, since it is larger than the sum of its proper divisors (42124246243).

222102000220021 is a wasteful number, since it uses less digits than its factorization.

222102000220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079991.

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

Adding to 222102000220021 its reverse (120022000201222), we get a palindrome (342124000421243).

The spelling of 222102000220021 in words is "two hundred twenty-two trillion, one hundred two billion, two hundred twenty thousand, twenty-one".