20100133331 has 2 divisors, whose sum is σ = 20100133332. Its totient is φ = 20100133330.

The previous prime is 20100133309. The next prime is 20100133351. The reversal of 20100133331 is 13333100102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20100133331 - 2²² = 20095939027 is a prime.

It is a super-2 number, since 2×20100133331² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20100133351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050066665 + 10050066666.

It is an arithmetic number, because the mean of its divisors is an integer number (10050066666).

Almost surely, 2^20100133331 is an apocalyptic number.

20100133331 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100133331 is an equidigital number, since it uses as much as digits as its factorization.

20100133331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 20100133331 its reverse (13333100102), we get a palindrome (33433233433).

The spelling of 20100133331 in words is "twenty billion, one hundred million, one hundred thirty-three thousand, three hundred thirty-one".