201221301102 has 16 divisors (see below), whose sum is σ = 404199996240. Its totient is φ = 66780868032.

The previous prime is 201221301097. The next prime is 201221301109. The reversal of 201221301102 is 201103122102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201221301109) 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, 73223263 + ... + 73226010.

It is an arithmetic number, because the mean of its divisors is an integer number (25262499765).

Almost surely, 2^201221301102 is an apocalyptic number.

201221301102 is an abundant number, since it is smaller than the sum of its proper divisors (202978695138).

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

201221301102 is a wasteful number, since it uses less digits than its factorization.

201221301102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146449507.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 201221301102 its reverse (201103122102), we get a palindrome (402324423204).

The spelling of 201221301102 in words is "two hundred one billion, two hundred twenty-one million, three hundred one thousand, one hundred two".