102201112200221 has 4 divisors (see below), whose sum is σ = 102201387737052. Its totient is φ = 102200836663392.

The previous prime is 102201112200137. The next prime is 102201112200289. The reversal of 102201112200221 is 122002211102201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60671465277721 + 41529646922500 = 7789189^2 + 6444350^2 .

It is a cyclic number.

It is not a de Polignac number, because 102201112200221 - 2⁴² = 97803065689117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102201112200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102201112230221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137211290 + ... + 137954123.

It is an arithmetic number, because the mean of its divisors is an integer number (25550346934263).

Almost surely, 2^{102201112200221} is an apocalyptic number.

It is an amenable number.

102201112200221 is a deficient number, since it is larger than the sum of its proper divisors (275536831).

102201112200221 is an equidigital number, since it uses as much as digits as its factorization.

102201112200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275536830.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102201112200221 its reverse (122002211102201), we get a palindrome (224203323302422).

The spelling of 102201112200221 in words is "one hundred two trillion, two hundred one billion, one hundred twelve million, two hundred thousand, two hundred twenty-one".