20001210133 has 2 divisors, whose sum is σ = 20001210134. Its totient is φ = 20001210132.

The previous prime is 20001210101. The next prime is 20001210157. The reversal of 20001210133 is 33101210002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14894249764 + 5106960369 = 122042^2 + 71463^2 .

It is a cyclic number.

It is not a de Polignac number, because 20001210133 - 2⁵ = 20001210101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20001211133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000605066 + 10000605067.

It is an arithmetic number, because the mean of its divisors is an integer number (10000605067).

Almost surely, 2^20001210133 is an apocalyptic number.

It is an amenable number.

20001210133 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001210133 is an equidigital number, since it uses as much as digits as its factorization.

20001210133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20001210133 its reverse (33101210002), we get a palindrome (53102420135).

The spelling of 20001210133 in words is "twenty billion, one million, two hundred ten thousand, one hundred thirty-three".