20211020112233 has 2 divisors, whose sum is σ = 20211020112234. Its totient is φ = 20211020112232.

The previous prime is 20211020112161. The next prime is 20211020112373. The reversal of 20211020112233 is 33221102011202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16443973883689 + 3767046228544 = 4055117^2 + 1940888^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20211020112233 is a prime.

It is not a weakly prime, because it can be changed into another prime (20211520112233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105510056116 + 10105510056117.

It is an arithmetic number, because the mean of its divisors is an integer number (10105510056117).

Almost surely, 2^{20211020112233} is an apocalyptic number.

It is an amenable number.

20211020112233 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211020112233 is an equidigital number, since it uses as much as digits as its factorization.

20211020112233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20211020112233 its reverse (33221102011202), we get a palindrome (53432122123435).

The spelling of 20211020112233 in words is "twenty trillion, two hundred eleven billion, twenty million, one hundred twelve thousand, two hundred thirty-three".