102120203 has 2 divisors, whose sum is σ = 102120204. Its totient is φ = 102120202.

The previous prime is 102120197. The next prime is 102120301. The reversal of 102120203 is 302021201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102120203 - 2⁸ = 102119947 is a prime.

It is a super-2 number, since 2×102120203² = 20857071721522418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102122203) 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 as a sum of consecutive naturals, namely, 51060101 + 51060102.

It is an arithmetic number, because the mean of its divisors is an integer number (51060102).

Almost surely, 2^102120203 is an apocalyptic number.

102120203 is a deficient number, since it is larger than the sum of its proper divisors (1).

102120203 is an equidigital number, since it uses as much as digits as its factorization.

102120203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 102120203 is about 10105.4541214138. The cubic root of 102120203 is about 467.4163393243.

Adding to 102120203 its reverse (302021201), we get a palindrome (404141404).

The spelling of 102120203 in words is "one hundred two million, one hundred twenty thousand, two hundred three".