102020203 has 4 divisors (see below), whose sum is σ = 106455888. Its totient is φ = 97584520.

The previous prime is 102020189. The next prime is 102020227. The reversal of 102020203 is 302020201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302020201 = 7 ⋅43145743.

It is a cyclic number.

It is not a de Polignac number, because 102020203 - 2¹⁷ = 101889131 is a prime.

It is a super-2 number, since 2×102020203² = 20816243640322418, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102020203.

It is not an unprimeable number, because it can be changed into a prime (102020273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2217808 + ... + 2217853.

It is an arithmetic number, because the mean of its divisors is an integer number (26613972).

Almost surely, 2^102020203 is an apocalyptic number.

102020203 is a deficient number, since it is larger than the sum of its proper divisors (4435685).

102020203 is an equidigital number, since it uses as much as digits as its factorization.

102020203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4435684.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 102020203 is about 10100.5050863806. The cubic root of 102020203 is about 467.2637188570.

Adding to 102020203 its reverse (302020201), we get a palindrome (404040404).

The spelling of 102020203 in words is "one hundred two million, twenty thousand, two hundred three".