102022121 has 2 divisors, whose sum is σ = 102022122. Its totient is φ = 102022120.

The previous prime is 102022111. The next prime is 102022127. The reversal of 102022121 is 121220201.

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., 65286400 + 36735721 = 8080^2 + 6061^2 .

It is an emirp because it is prime and its reverse (121220201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102022121 is a prime.

It is not a weakly prime, because it can be changed into another prime (102022127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51011060 + 51011061.

It is an arithmetic number, because the mean of its divisors is an integer number (51011061).

Almost surely, 2^102022121 is an apocalyptic number.

It is an amenable number.

102022121 is a deficient number, since it is larger than the sum of its proper divisors (1).

102022121 is an equidigital number, since it uses as much as digits as its factorization.

102022121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 102022121 is about 10100.6000316813. The cubic root of 102022121 is about 467.2666470554.

Adding to 102022121 its reverse (121220201), we get a palindrome (223242322).

The spelling of 102022121 in words is "one hundred two million, twenty-two thousand, one hundred twenty-one".