221201200122102 has 48 divisors (see below), whose sum is σ = 480577492961280. Its totient is φ = 73532648928816.

The previous prime is 221201200122013. The next prime is 221201200122113. The reversal of 221201200122102 is 201221002102122.

It is a happy number.

221201200122102 is a `hidden beast` number, since 221 + 20 + 1 + 200 + 1 + 221 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7114873 + ... + 22204139.

It is an arithmetic number, because the mean of its divisors is an integer number (10012031103360).

Almost surely, 2^{221201200122102} is an apocalyptic number.

221201200122102 is an abundant number, since it is smaller than the sum of its proper divisors (259376292839178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221201200122102 is a wasteful number, since it uses less digits than its factorization.

221201200122102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15091497 (or 15091494 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 221201200122102 its reverse (201221002102122), we get a palindrome (422422202224224).

The spelling of 221201200122102 in words is "two hundred twenty-one trillion, two hundred one billion, two hundred million, one hundred twenty-two thousand, one hundred two".