212212221202 has 4 divisors (see below), whose sum is σ = 318318331806. Its totient is φ = 106106110600.

The previous prime is 212212221079. The next prime is 212212221203. The reversal of 212212221202 is 202122212212.

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., 210580949881 + 1631271321 = 458891^2 + 40389^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 212212221202.

It is not an unprimeable number, because it can be changed into a prime (212212221203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53053055299 + ... + 53053055302.

Almost surely, 2^212212221202 is an apocalyptic number.

212212221202 is a deficient number, since it is larger than the sum of its proper divisors (106106110604).

212212221202 is a wasteful number, since it uses less digits than its factorization.

212212221202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106106110603.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 212212221202 its reverse (202122212212), we get a palindrome (414334433414).

The spelling of 212212221202 in words is "two hundred twelve billion, two hundred twelve million, two hundred twenty-one thousand, two hundred two".