2121310100369 has 2 divisors, whose sum is σ = 2121310100370. Its totient is φ = 2121310100368.

The previous prime is 2121310100303. The next prime is 2121310100417. The reversal of 2121310100369 is 9630010131212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1451675571025 + 669634529344 = 1204855^2 + 818312^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121310100369 - 2⁸ = 2121310100113 is a prime.

It is a super-2 number, since 2×2121310100369² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2121310180369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060655050184 + 1060655050185.

It is an arithmetic number, because the mean of its divisors is an integer number (1060655050185).

Almost surely, 2^{2121310100369} is an apocalyptic number.

It is an amenable number.

2121310100369 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121310100369 is an equidigital number, since it uses as much as digits as its factorization.

2121310100369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 2121310100369 in words is "two trillion, one hundred twenty-one billion, three hundred ten million, one hundred thousand, three hundred sixty-nine".