221012212202 has 16 divisors (see below), whose sum is σ = 332633280672. Its totient is φ = 110134528560.

The previous prime is 221012212193. The next prime is 221012212207. The reversal of 221012212202 is 202212210122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (221012212207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11122508 + ... + 11142360.

It is an arithmetic number, because the mean of its divisors is an integer number (20789580042).

Almost surely, 2^221012212202 is an apocalyptic number.

221012212202 is a deficient number, since it is larger than the sum of its proper divisors (111621068470).

221012212202 is a wasteful number, since it uses less digits than its factorization.

221012212202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38293.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221012212202 its reverse (202212210122), we get a palindrome (423224422324).

The spelling of 221012212202 in words is "two hundred twenty-one billion, twelve million, two hundred twelve thousand, two hundred two".