20210021118233 has 2 divisors, whose sum is σ = 20210021118234. Its totient is φ = 20210021118232.

The previous prime is 20210021118229. The next prime is 20210021118239. The reversal of 20210021118233 is 33281112001202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19693474179289 + 516546938944 = 4437733^2 + 718712^2 .

It is a cyclic number.

It is not a de Polignac number, because 20210021118233 - 2² = 20210021118229 is a prime.

It is not a weakly prime, because it can be changed into another prime (20210021118239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105010559116 + 10105010559117.

It is an arithmetic number, because the mean of its divisors is an integer number (10105010559117).

Almost surely, 2^{20210021118233} is an apocalyptic number.

It is an amenable number.

20210021118233 is a deficient number, since it is larger than the sum of its proper divisors (1).

20210021118233 is an equidigital number, since it uses as much as digits as its factorization.

20210021118233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 20210021118233 its reverse (33281112001202), we get a palindrome (53491133119435).

The spelling of 20210021118233 in words is "twenty trillion, two hundred ten billion, twenty-one million, one hundred eighteen thousand, two hundred thirty-three".