201221100302 has 16 divisors (see below), whose sum is σ = 308142954000. Its totient is φ = 98514391872.

The previous prime is 201221100281. The next prime is 201221100331. The reversal of 201221100302 is 203001122102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1849223 + ... + 1955010.

It is an arithmetic number, because the mean of its divisors is an integer number (19258934625).

Almost surely, 2^201221100302 is an apocalyptic number.

201221100302 is a deficient number, since it is larger than the sum of its proper divisors (106921853698).

201221100302 is a wasteful number, since it uses less digits than its factorization.

201221100302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804787.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 201221100302 its reverse (203001122102), we get a palindrome (404222222404).

The spelling of 201221100302 in words is "two hundred one billion, two hundred twenty-one million, one hundred thousand, three hundred two".