102202122202221 has 4 divisors (see below), whose sum is σ = 136269496269632. Its totient is φ = 68134748134812.

The previous prime is 102202122202207. The next prime is 102202122202247. The reversal of 102202122202221 is 122202221202201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 102202122202221 - 2¹⁵ = 102202122169453 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102202122206221) 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, 17033687033701 + ... + 17033687033706.

It is an arithmetic number, because the mean of its divisors is an integer number (34067374067408).

Almost surely, 2^{102202122202221} is an apocalyptic number.

It is an amenable number.

102202122202221 is a deficient number, since it is larger than the sum of its proper divisors (34067374067411).

102202122202221 is an equidigital number, since it uses as much as digits as its factorization.

102202122202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34067374067410.

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

Adding to 102202122202221 its reverse (122202221202201), we get a palindrome (224404343404422).

The spelling of 102202122202221 in words is "one hundred two trillion, two hundred two billion, one hundred twenty-two million, two hundred two thousand, two hundred twenty-one".