211221022222202 has 8 divisors (see below), whose sum is σ = 324559131707412. Its totient is φ = 103034644986400.

The previous prime is 211221022222157. The next prime is 211221022222253. The reversal of 211221022222202 is 202222220122112.

It can be written as a sum of positive squares in 2 ways, for example, as 205894116678121 + 5326905544081 = 14349011^2 + 2308009^2 .

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

It is a super-2 number, since 2×211221022222202² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1287933062249 + ... + 1287933062412.

Almost surely, 2^{211221022222202} is an apocalyptic number.

211221022222202 is a deficient number, since it is larger than the sum of its proper divisors (113338109485210).

211221022222202 is a wasteful number, since it uses less digits than its factorization.

211221022222202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575866124704.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 211221022222202 its reverse (202222220122112), we get a palindrome (413443242344314).

The spelling of 211221022222202 in words is "two hundred eleven trillion, two hundred twenty-one billion, twenty-two million, two hundred twenty-two thousand, two hundred two".