201221000002099 has 48 divisors (see below), whose sum is σ = 256282761424896. Its totient is φ = 156224653603200.

The previous prime is 201221000002091. The next prime is 201221000002103. The reversal of 201221000002099 is 990200000122102.

It is not a de Polignac number, because 201221000002099 - 2³ = 201221000002091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201221000002091) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2091146302 + ... + 2091242524.

It is an arithmetic number, because the mean of its divisors is an integer number (5339224196352).

Almost surely, 2^{201221000002099} is an apocalyptic number.

201221000002099 is a deficient number, since it is larger than the sum of its proper divisors (55061761422797).

201221000002099 is a wasteful number, since it uses less digits than its factorization.

201221000002099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110336 (or 110329 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 201221000002099 in words is "two hundred one trillion, two hundred twenty-one billion, two thousand, ninety-nine".