211020020203 has 2 divisors, whose sum is σ = 211020020204. Its totient is φ = 211020020202.

The previous prime is 211020020041. The next prime is 211020020249. The reversal of 211020020203 is 302020020112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211020020203 - 2²⁵ = 210986465771 is a prime.

It is a super-2 number, since 2×211020020203² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211020020903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105510010101 + 105510010102.

It is an arithmetic number, because the mean of its divisors is an integer number (105510010102).

Almost surely, 2^211020020203 is an apocalyptic number.

211020020203 is a deficient number, since it is larger than the sum of its proper divisors (1).

211020020203 is an equidigital number, since it uses as much as digits as its factorization.

211020020203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 211020020203 its reverse (302020020112), we get a palindrome (513040040315).

Subtracting 211020020203 from its reverse (302020020112), we obtain a palindrome (90999999909).

The spelling of 211020020203 in words is "two hundred eleven billion, twenty million, twenty thousand, two hundred three".