102223221202021 has 2 divisors, whose sum is σ = 102223221202022. Its totient is φ = 102223221202020.

The previous prime is 102223221202013. The next prime is 102223221202033. The reversal of 102223221202021 is 120202122322201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99271113053121 + 2952108148900 = 9963489^2 + 1718170^2 .

It is a cyclic number.

It is not a de Polignac number, because 102223221202021 - 2³ = 102223221202013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102223221201983 and 102223221202001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102223221202001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51111610601010 + 51111610601011.

It is an arithmetic number, because the mean of its divisors is an integer number (51111610601011).

Almost surely, 2^{102223221202021} is an apocalyptic number.

It is an amenable number.

102223221202021 is a deficient number, since it is larger than the sum of its proper divisors (1).

102223221202021 is an equidigital number, since it uses as much as digits as its factorization.

102223221202021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 102223221202021 its reverse (120202122322201), we get a palindrome (222425343524222).

The spelling of 102223221202021 in words is "one hundred two trillion, two hundred twenty-three billion, two hundred twenty-one million, two hundred two thousand, twenty-one".