221211210202 has 32 divisors (see below), whose sum is σ = 342854091648. Its totient is φ = 107001000000.

The previous prime is 221211210167. The next prime is 221211210203. The reversal of 221211210202 is 202012112122.

It is a happy number.

221211210202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (221211210203) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 1801177 + ... + 1920067.

It is an arithmetic number, because the mean of its divisors is an integer number (10714190364).

Almost surely, 2^221211210202 is an apocalyptic number.

221211210202 is a deficient number, since it is larger than the sum of its proper divisors (121642881446).

221211210202 is a wasteful number, since it uses less digits than its factorization.

221211210202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119206.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221211210202 its reverse (202012112122), we get a palindrome (423223322324).

The spelling of 221211210202 in words is "two hundred twenty-one billion, two hundred eleven million, two hundred ten thousand, two hundred two".