20212020133 has 2 divisors, whose sum is σ = 20212020134. Its totient is φ = 20212020132.

The previous prime is 20212020131. The next prime is 20212020217. The reversal of 20212020133 is 33102021202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19141552609 + 1070467524 = 138353^2 + 32718^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212020133 - 2¹ = 20212020131 is a prime.

Together with 20212020131, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212020131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106010066 + 10106010067.

It is an arithmetic number, because the mean of its divisors is an integer number (10106010067).

Almost surely, 2^20212020133 is an apocalyptic number.

It is an amenable number.

20212020133 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212020133 is an equidigital number, since it uses as much as digits as its factorization.

20212020133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20212020133 its reverse (33102021202), we get a palindrome (53314041335).

The spelling of 20212020133 in words is "twenty billion, two hundred twelve million, twenty thousand, one hundred thirty-three".