201221202122102 has 16 divisors (see below), whose sum is σ = 307527213010752. Its totient is φ = 98712136922880.

The previous prime is 201221202122053. The next prime is 201221202122131.

201221202122102 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

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, 104600678 + ... + 106507014.

It is an arithmetic number, because the mean of its divisors is an integer number (19220450813172).

Almost surely, 2^{201221202122102} is an apocalyptic number.

201221202122102 is a deficient number, since it is larger than the sum of its proper divisors (106306010888650).

201221202122102 is a wasteful number, since it uses less digits than its factorization.

201221202122102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2902183.

The product of its (nonzero) digits is 256, while the sum is 20.

It can be divided in two parts, 20122120 and 2122102, that added together give a palindrome (22244222).

The spelling of 201221202122102 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred two million, one hundred twenty-two thousand, one hundred two".