12402010321 has 2 divisors, whose sum is σ = 12402010322. Its totient is φ = 12402010320.

The previous prime is 12402010307. The next prime is 12402010331. The reversal of 12402010321 is 12301020421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12328993296 + 73017025 = 111036^2 + 8545^2 .

It is a cyclic number.

It is not a de Polignac number, because 12402010321 - 2¹⁹ = 12401486033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12402010295 and 12402010304.

It is not a weakly prime, because it can be changed into another prime (12402010331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6201005160 + 6201005161.

It is an arithmetic number, because the mean of its divisors is an integer number (6201005161).

Almost surely, 2^12402010321 is an apocalyptic number.

It is an amenable number.

12402010321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12402010321 is an equidigital number, since it uses as much as digits as its factorization.

12402010321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12402010321 its reverse (12301020421), we get a palindrome (24703030742).

The spelling of 12402010321 in words is "twelve billion, four hundred two million, ten thousand, three hundred twenty-one".