221201212202 has 8 divisors (see below), whose sum is σ = 331812313056. Its totient is φ = 110597107852.

The previous prime is 221201212189. The next prime is 221201212247. The reversal of 221201212202 is 202212102122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1669358 + ... + 1796985.

It is an arithmetic number, because the mean of its divisors is an integer number (41476539132).

Almost surely, 2^221201212202 is an apocalyptic number.

221201212202 is a deficient number, since it is larger than the sum of its proper divisors (110611100854).

221201212202 is a wasteful number, since it uses less digits than its factorization.

221201212202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3498252.

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

Adding to 221201212202 its reverse (202212102122), we get a palindrome (423413314324).

The spelling of 221201212202 in words is "two hundred twenty-one billion, two hundred one million, two hundred twelve thousand, two hundred two".