222202010021021 has 8 divisors (see below), whose sum is σ = 225631021433400. Its totient is φ = 218793717711360.

The previous prime is 222202010021003. The next prime is 222202010021083. The reversal of 222202010021021 is 120120010202222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 47209459195396 + 174992550825625 = 6870914^2 + 13228475^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222202010021021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222202010021221) 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, 5179754066 + ... + 5179796963.

It is an arithmetic number, because the mean of its divisors is an integer number (28203877679175).

Almost surely, 2^{222202010021021} is an apocalyptic number.

It is an amenable number.

222202010021021 is a deficient number, since it is larger than the sum of its proper divisors (3429011412379).

222202010021021 is a wasteful number, since it uses less digits than its factorization.

222202010021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10359551359.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222202010021021 its reverse (120120010202222), we get a palindrome (342322020223243).

The spelling of 222202010021021 in words is "two hundred twenty-two trillion, two hundred two billion, ten million, twenty-one thousand, twenty-one".