20021202133 has 2 divisors, whose sum is σ = 20021202134. Its totient is φ = 20021202132.

The previous prime is 20021202083. The next prime is 20021202151. The reversal of 20021202133 is 33120212002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12873852369 + 7147349764 = 113463^2 + 84542^2 .

It is a cyclic number.

It is not a de Polignac number, because 20021202133 - 2²¹ = 20019104981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20021202433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010601066 + 10010601067.

It is an arithmetic number, because the mean of its divisors is an integer number (10010601067).

Almost surely, 2^20021202133 is an apocalyptic number.

It is an amenable number.

20021202133 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021202133 is an equidigital number, since it uses as much as digits as its factorization.

20021202133 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 20021202133 its reverse (33120212002), we get a palindrome (53141414135).

The spelling of 20021202133 in words is "twenty billion, twenty-one million, two hundred two thousand, one hundred thirty-three".