21010101130331 has 2 divisors, whose sum is σ = 21010101130332. Its totient is φ = 21010101130330.

The previous prime is 21010101130309. The next prime is 21010101130349. The reversal of 21010101130331 is 13303110101012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21010101130331 - 2²⁶ = 21010034021467 is a prime.

It is a super-2 number, since 2×21010101130331² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21010101130531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505050565165 + 10505050565166.

It is an arithmetic number, because the mean of its divisors is an integer number (10505050565166).

Almost surely, 2^{21010101130331} is an apocalyptic number.

21010101130331 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010101130331 is an equidigital number, since it uses as much as digits as its factorization.

21010101130331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 21010101130331 its reverse (13303110101012), we get a palindrome (34313211231343).

The spelling of 21010101130331 in words is "twenty-one trillion, ten billion, one hundred one million, one hundred thirty thousand, three hundred thirty-one".