102201973 has 2 divisors, whose sum is σ = 102201974. Its totient is φ = 102201972.

The previous prime is 102201941. The next prime is 102201991. The reversal of 102201973 is 379102201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89075844 + 13126129 = 9438^2 + 3623^2 .

It is an emirp because it is prime and its reverse (379102201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102201973 - 2⁵ = 102201941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102201173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51100986 + 51100987.

It is an arithmetic number, because the mean of its divisors is an integer number (51100987).

Almost surely, 2^102201973 is an apocalyptic number.

It is an amenable number.

102201973 is a deficient number, since it is larger than the sum of its proper divisors (1).

102201973 is an equidigital number, since it uses as much as digits as its factorization.

102201973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 102201973 is about 10109.4991468420. The cubic root of 102201973 is about 467.5410630521.

The spelling of 102201973 in words is "one hundred two million, two hundred one thousand, nine hundred seventy-three".