102219973 has 2 divisors, whose sum is σ = 102219974. Its totient is φ = 102219972.

The previous prime is 102219961. The next prime is 102219977. The reversal of 102219973 is 379912201.

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., 73307844 + 28912129 = 8562^2 + 5377^2 .

It is a cyclic number.

It is not a de Polignac number, because 102219973 - 2¹⁷ = 102088901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102219977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51109986 + 51109987.

It is an arithmetic number, because the mean of its divisors is an integer number (51109987).

Almost surely, 2^102219973 is an apocalyptic number.

It is an amenable number.

102219973 is a deficient number, since it is larger than the sum of its proper divisors (1).

102219973 is an equidigital number, since it uses as much as digits as its factorization.

102219973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 102219973 is about 10110.3893594658. The cubic root of 102219973 is about 467.5685095057.

The spelling of 102219973 in words is "one hundred two million, two hundred nineteen thousand, nine hundred seventy-three".