20021202112243 has 2 divisors, whose sum is σ = 20021202112244. Its totient is φ = 20021202112242.

The previous prime is 20021202112201. The next prime is 20021202112259. The reversal of 20021202112243 is 34221120212002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20021202112243 is a prime.

It is not a weakly prime, because it can be changed into another prime (20021202112283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010601056121 + 10010601056122.

It is an arithmetic number, because the mean of its divisors is an integer number (10010601056122).

Almost surely, 2^{20021202112243} is an apocalyptic number.

20021202112243 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021202112243 is an equidigital number, since it uses as much as digits as its factorization.

20021202112243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 20021202112243 its reverse (34221120212002), we get a palindrome (54242322324245).

The spelling of 20021202112243 in words is "twenty trillion, twenty-one billion, two hundred two million, one hundred twelve thousand, two hundred forty-three".