102222210121 has 2 divisors, whose sum is σ = 102222210122. Its totient is φ = 102222210120.

The previous prime is 102222210053. The next prime is 102222210131. The reversal of 102222210121 is 121012222201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79098750025 + 23123460096 = 281245^2 + 152064^2 .

It is a cyclic number.

It is not a de Polignac number, because 102222210121 - 2¹⁵ = 102222177353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102222210095 and 102222210104.

It is not a weakly prime, because it can be changed into another prime (102222210131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51111105060 + 51111105061.

It is an arithmetic number, because the mean of its divisors is an integer number (51111105061).

Almost surely, 2^102222210121 is an apocalyptic number.

It is an amenable number.

102222210121 is a deficient number, since it is larger than the sum of its proper divisors (1).

102222210121 is an equidigital number, since it uses as much as digits as its factorization.

102222210121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 102222210121 its reverse (121012222201), we get a palindrome (223234432322).

The spelling of 102222210121 in words is "one hundred two billion, two hundred twenty-two million, two hundred ten thousand, one hundred twenty-one".