102219841 has 2 divisors, whose sum is σ = 102219842. Its totient is φ = 102219840.

The previous prime is 102219781. The next prime is 102219893. The reversal of 102219841 is 148912201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77369616 + 24850225 = 8796^2 + 4985^2 .

It is a cyclic number.

It is not a de Polignac number, because 102219841 - 2²⁵ = 68665409 is a prime.

It is not a weakly prime, because it can be changed into another prime (102219241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51109920 + 51109921.

It is an arithmetic number, because the mean of its divisors is an integer number (51109921).

Almost surely, 2^102219841 is an apocalyptic number.

It is an amenable number.

102219841 is a deficient number, since it is larger than the sum of its proper divisors (1).

102219841 is an equidigital number, since it uses as much as digits as its factorization.

102219841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 102219841 is about 10110.3828315252. The cubic root of 102219841 is about 467.5683082434.

The spelling of 102219841 in words is "one hundred two million, two hundred nineteen thousand, eight hundred forty-one".