102210214021 has 2 divisors, whose sum is σ = 102210214022. Its totient is φ = 102210214020.

The previous prime is 102210213991. The next prime is 102210214033. The reversal of 102210214021 is 120412012201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69545073796 + 32665140225 = 263714^2 + 180735^2 .

It is a cyclic number.

It is not a de Polignac number, because 102210214021 - 2⁷ = 102210213893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102210213986 and 102210214004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102210214921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51105107010 + 51105107011.

It is an arithmetic number, because the mean of its divisors is an integer number (51105107011).

Almost surely, 2^102210214021 is an apocalyptic number.

It is an amenable number.

102210214021 is a deficient number, since it is larger than the sum of its proper divisors (1).

102210214021 is an equidigital number, since it uses as much as digits as its factorization.

102210214021 is an evil number, because the sum of its binary digits is even.

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

Adding to 102210214021 its reverse (120412012201), we get a palindrome (222622226222).

The spelling of 102210214021 in words is "one hundred two billion, two hundred ten million, two hundred fourteen thousand, twenty-one".