102222201210121 has 2 divisors, whose sum is σ = 102222201210122. Its totient is φ = 102222201210120.

The previous prime is 102222201210109. The next prime is 102222201210131. The reversal of 102222201210121 is 121012102222201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100373047263225 + 1849153946896 = 10018635^2 + 1359836^2 .

It is an emirp because it is prime and its reverse (121012102222201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102222201210121 - 2⁷ = 102222201209993 is a prime.

It is not a weakly prime, because it can be changed into another prime (102222201210131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51111100605060 + 51111100605061.

It is an arithmetic number, because the mean of its divisors is an integer number (51111100605061).

Almost surely, 2^{102222201210121} is an apocalyptic number.

It is an amenable number.

102222201210121 is a deficient number, since it is larger than the sum of its proper divisors (1).

102222201210121 is an equidigital number, since it uses as much as digits as its factorization.

102222201210121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 102222201210121 its reverse (121012102222201), we get a palindrome (223234303432322).

The spelling of 102222201210121 in words is "one hundred two trillion, two hundred twenty-two billion, two hundred one million, two hundred ten thousand, one hundred twenty-one".