2101305666331 has 2 divisors, whose sum is σ = 2101305666332. Its totient is φ = 2101305666330.

The previous prime is 2101305666323. The next prime is 2101305666347. The reversal of 2101305666331 is 1336665031012.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2101305666331 - 2³ = 2101305666323 is a prime.

It is a super-2 number, since 2×2101305666331² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2101305606331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050652833165 + 1050652833166.

It is an arithmetic number, because the mean of its divisors is an integer number (1050652833166).

Almost surely, 2^{2101305666331} is an apocalyptic number.

2101305666331 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101305666331 is an equidigital number, since it uses as much as digits as its factorization.

2101305666331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 37.

The spelling of 2101305666331 in words is "two trillion, one hundred one billion, three hundred five million, six hundred sixty-six thousand, three hundred thirty-one".