212221021222202 has 4 divisors (see below), whose sum is σ = 318331531833306. Its totient is φ = 106110510611100.

The previous prime is 212221021222201. The next prime is 212221021222219. The reversal of 212221021222202 is 202222120122212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 178113073501801 + 34107947720401 = 13345901^2 + 5840201^2 .

It is not an unprimeable number, because it can be changed into a prime (212221021222201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53055255305549 + ... + 53055255305552.

Almost surely, 2^{212221021222202} is an apocalyptic number.

212221021222202 is a deficient number, since it is larger than the sum of its proper divisors (106110510611104).

212221021222202 is a wasteful number, since it uses less digits than its factorization.

212221021222202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106110510611103.

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

Adding to 212221021222202 its reverse (202222120122212), we get a palindrome (414443141344414).

The spelling of 212221021222202 in words is "two hundred twelve trillion, two hundred twenty-one billion, twenty-one million, two hundred twenty-two thousand, two hundred two".