10001330434421 has 2 divisors, whose sum is σ = 10001330434422. Its totient is φ = 10001330434420.

The previous prime is 10001330434373. The next prime is 10001330434429. The reversal of 10001330434421 is 12443403310001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8334688164196 + 1666642270225 = 2886986^2 + 1290985^2 .

It is a cyclic number.

It is not a de Polignac number, because 10001330434421 - 2³⁰ = 10000256692597 is a prime.

It is a super-2 number, since 2×10001330434421² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10001330434429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000665217210 + 5000665217211.

It is an arithmetic number, because the mean of its divisors is an integer number (5000665217211).

Almost surely, 2^{10001330434421} is an apocalyptic number.

It is an amenable number.

10001330434421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001330434421 is an equidigital number, since it uses as much as digits as its factorization.

10001330434421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 10001330434421 its reverse (12443403310001), we get a palindrome (22444733744422).

The spelling of 10001330434421 in words is "ten trillion, one billion, three hundred thirty million, four hundred thirty-four thousand, four hundred twenty-one".