20010202243 has 2 divisors, whose sum is σ = 20010202244. Its totient is φ = 20010202242.

The previous prime is 20010202187. The next prime is 20010202253. The reversal of 20010202243 is 34220201002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20010202243 is a prime.

It is not a weakly prime, because it can be changed into another prime (20010202253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005101121 + 10005101122.

It is an arithmetic number, because the mean of its divisors is an integer number (10005101122).

Almost surely, 2^20010202243 is an apocalyptic number.

20010202243 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010202243 is an equidigital number, since it uses as much as digits as its factorization.

20010202243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20010202243 its reverse (34220201002), we get a palindrome (54230403245).

The spelling of 20010202243 in words is "twenty billion, ten million, two hundred two thousand, two hundred forty-three".