2101001030321 has 2 divisors, whose sum is σ = 2101001030322. Its totient is φ = 2101001030320.

The previous prime is 2101001030257. The next prime is 2101001030327. The reversal of 2101001030321 is 1230301001012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1957511590321 + 143489440000 = 1399111^2 + 378800^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101001030321 - 2⁶ = 2101001030257 is a prime.

It is a super-2 number, since 2×2101001030321² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2101001030296 and 2101001030305.

It is not a weakly prime, because it can be changed into another prime (2101001030327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050500515160 + 1050500515161.

It is an arithmetic number, because the mean of its divisors is an integer number (1050500515161).

Almost surely, 2^{2101001030321} is an apocalyptic number.

It is an amenable number.

2101001030321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101001030321 is an equidigital number, since it uses as much as digits as its factorization.

2101001030321 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 14.

Adding to 2101001030321 its reverse (1230301001012), we get a palindrome (3331302031333).

It can be divided in two parts, 210100 and 1030321, that added together give a palindrome (1240421).

The spelling of 2101001030321 in words is "two trillion, one hundred one billion, one million, thirty thousand, three hundred twenty-one".