30033443431421 has 2 divisors, whose sum is σ = 30033443431422. Its totient is φ = 30033443431420.

The previous prime is 30033443431379. The next prime is 30033443431451. The reversal of 30033443431421 is 12413434433003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18409128223396 + 11624315208025 = 4290586^2 + 3409445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30033443431421 is a prime.

It is a super-2 number, since 2×30033443431421² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30033443431451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15016721715710 + 15016721715711.

It is an arithmetic number, because the mean of its divisors is an integer number (15016721715711).

Almost surely, 2^{30033443431421} is an apocalyptic number.

It is an amenable number.

30033443431421 is a deficient number, since it is larger than the sum of its proper divisors (1).

30033443431421 is an equidigital number, since it uses as much as digits as its factorization.

30033443431421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 35.

Adding to 30033443431421 its reverse (12413434433003), we get a palindrome (42446877864424).

The spelling of 30033443431421 in words is "thirty trillion, thirty-three billion, four hundred forty-three million, four hundred thirty-one thousand, four hundred twenty-one".