221212000202 has 4 divisors (see below), whose sum is σ = 331818000306. Its totient is φ = 110606000100.

The previous prime is 221212000181. The next prime is 221212000211. The reversal of 221212000202 is 202000212122.

221212000202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 193460105281 + 27751894921 = 439841^2 + 166589^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55303000049 + ... + 55303000052.

Almost surely, 2^221212000202 is an apocalyptic number.

221212000202 is a deficient number, since it is larger than the sum of its proper divisors (110606000104).

221212000202 is a wasteful number, since it uses less digits than its factorization.

221212000202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110606000103.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 221212000202 its reverse (202000212122), we get a palindrome (423212212324).

The spelling of 221212000202 in words is "two hundred twenty-one billion, two hundred twelve million, two hundred two", and thus it is an aban number.