201221211121102 has 8 divisors (see below), whose sum is σ = 303395712105456. Its totient is φ = 100089307085952.

The previous prime is 201221211121001. The next prime is 201221211121103. The reversal of 201221211121102 is 201121112122102.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 201221211121102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201221211121103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260649236818 + ... + 260649237589.

It is an arithmetic number, because the mean of its divisors is an integer number (37924464013182).

Almost surely, 2^{201221211121102} is an apocalyptic number.

201221211121102 is a deficient number, since it is larger than the sum of its proper divisors (102174500984354).

201221211121102 is a wasteful number, since it uses less digits than its factorization.

201221211121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521298474602.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 201221211121102 its reverse (201121112122102), we get a palindrome (402342323243204).

The spelling of 201221211121102 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred eleven million, one hundred twenty-one thousand, one hundred two".