202222022222221 has 8 divisors (see below), whose sum is σ = 204320527247480. Its totient is φ = 200123797644288.

The previous prime is 202222022222219. The next prime is 202222022222281. The reversal of 202222022222221 is 122222220222202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2250210004900 + 199971812217321 = 1500070^2 + 14141139^2 .

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 202222022222221 - 2¹ = 202222022222219 is a prime.

It is a super-2 number, since 2×202222022222221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202222022222281) 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, 68662056 + ... + 71546641.

It is an arithmetic number, because the mean of its divisors is an integer number (25540065905935).

Almost surely, 2^{202222022222221} is an apocalyptic number.

It is an amenable number.

202222022222221 is a deficient number, since it is larger than the sum of its proper divisors (2098505025259).

202222022222221 is a wasteful number, since it uses less digits than its factorization.

202222022222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140223663.

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 202222022222221 its reverse (122222220222202), we get a palindrome (324444242444423).

The spelling of 202222022222221 in words is "two hundred two trillion, two hundred twenty-two billion, twenty-two million, two hundred twenty-two thousand, two hundred twenty-one".