221202212210012 has 12 divisors (see below), whose sum is σ = 422295132401016. Its totient is φ = 100546460095440.

The previous prime is 221202212209981. The next prime is 221202212210033. The reversal of 221202212210012 is 210012212202122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2513661502343 + ... + 2513661502430.

It is an arithmetic number, because the mean of its divisors is an integer number (35191261033418).

Almost surely, 2^{221202212210012} is an apocalyptic number.

221202212210012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221202212210012 is a deficient number, since it is larger than the sum of its proper divisors (201092920191004).

221202212210012 is a wasteful number, since it uses less digits than its factorization.

221202212210012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5027323004788 (or 5027323004786 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221202212210012 its reverse (210012212202122), we get a palindrome (431214424412134).

The spelling of 221202212210012 in words is "two hundred twenty-one trillion, two hundred two billion, two hundred twelve million, two hundred ten thousand, twelve".