102222202021221 has 16 divisors (see below), whose sum is σ = 138194162265536. Its totient is φ = 67199604725376.

The previous prime is 102222202021061. The next prime is 102222202021231. The reversal of 102222202021221 is 122120202222201.

It is not a de Polignac number, because 102222202021221 - 2¹⁸ = 102222201759077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102222202021231) 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 15 ways as a sum of consecutive naturals, for example, 51078010 + ... + 53041563.

It is an arithmetic number, because the mean of its divisors is an integer number (8637135141596).

Almost surely, 2^{102222202021221} is an apocalyptic number.

It is an amenable number.

102222202021221 is a deficient number, since it is larger than the sum of its proper divisors (35971960244315).

102222202021221 is a wasteful number, since it uses less digits than its factorization.

102222202021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104124132.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 102222202021221 its reverse (122120202222201), we get a palindrome (224342404243422).

The spelling of 102222202021221 in words is "one hundred two trillion, two hundred twenty-two billion, two hundred two million, twenty-one thousand, two hundred twenty-one".