102202122131221 has 4 divisors (see below), whose sum is σ = 116802425292832. Its totient is φ = 87601818969612.

The previous prime is 102202122131209. The next prime is 102202122131269. The reversal of 102202122131221 is 122131221202201.

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 a cyclic number.

It is not a de Polignac number, because 102202122131221 - 2¹⁹ = 102202121606933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102202122131192 and 102202122131201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102202122131201) 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, 7300151580795 + ... + 7300151580808.

It is an arithmetic number, because the mean of its divisors is an integer number (29200606323208).

Almost surely, 2^{102202122131221} is an apocalyptic number.

It is an amenable number.

102202122131221 is a deficient number, since it is larger than the sum of its proper divisors (14600303161611).

102202122131221 is an equidigital number, since it uses as much as digits as its factorization.

102202122131221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14600303161610.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 102202122131221 its reverse (122131221202201), we get a palindrome (224333343333422).

The spelling of 102202122131221 in words is "one hundred two trillion, two hundred two billion, one hundred twenty-two million, one hundred thirty-one thousand, two hundred twenty-one".