102222202011221 has 4 divisors (see below), whose sum is σ = 102358316794944. Its totient is φ = 102086087227500.

The previous prime is 102222202011191. The next prime is 102222202011239. The reversal of 102222202011221 is 122110202222201.

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 102222202011221 - 2⁶ = 102222202011157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102222202011193 and 102222202011202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102222202011271) 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, 68057390735 + ... + 68057392236.

It is an arithmetic number, because the mean of its divisors is an integer number (25589579198736).

Almost surely, 2^{102222202011221} is an apocalyptic number.

It is an amenable number.

102222202011221 is a deficient number, since it is larger than the sum of its proper divisors (136114783723).

102222202011221 is an equidigital number, since it uses as much as digits as its factorization.

102222202011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136114783722.

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

Adding to 102222202011221 its reverse (122110202222201), we get a palindrome (224332404233422).

The spelling of 102222202011221 in words is "one hundred two trillion, two hundred twenty-two billion, two hundred two million, eleven thousand, two hundred twenty-one".