2102006321 has 2 divisors, whose sum is σ = 2102006322. Its totient is φ = 2102006320.

The previous prime is 2102006303. The next prime is 2102006339. The reversal of 2102006321 is 1236002012.

It is a balanced prime because it is at equal distance from previous prime (2102006303) and next prime (2102006339).

It can be written as a sum of positive squares in only one way, i.e., 2016997921 + 85008400 = 44911^2 + 9220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2102006321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2102006321.

It is not a weakly prime, because it can be changed into another prime (2102506321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051003160 + 1051003161.

It is an arithmetic number, because the mean of its divisors is an integer number (1051003161).

Almost surely, 2^2102006321 is an apocalyptic number.

It is an amenable number.

2102006321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102006321 is an equidigital number, since it uses as much as digits as its factorization.

2102006321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2102006321 is about 45847.6424802846. The cubic root of 2102006321 is about 1280.9868530972.

Adding to 2102006321 its reverse (1236002012), we get a palindrome (3338008333).

The spelling of 2102006321 in words is "two billion, one hundred two million, six thousand, three hundred twenty-one".