33412005421 has 2 divisors, whose sum is σ = 33412005422. Its totient is φ = 33412005420.

The previous prime is 33412005413. The next prime is 33412005449. The reversal of 33412005421 is 12450021433.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33311725225 + 100280196 = 182515^2 + 10014^2 .

It is an emirp because it is prime and its reverse (12450021433) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33412005421 - 2³ = 33412005413 is a prime.

It is a super-2 number, since 2×33412005421² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33412005461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16706002710 + 16706002711.

It is an arithmetic number, because the mean of its divisors is an integer number (16706002711).

Almost surely, 2^33412005421 is an apocalyptic number.

It is an amenable number.

33412005421 is a deficient number, since it is larger than the sum of its proper divisors (1).

33412005421 is an equidigital number, since it uses as much as digits as its factorization.

33412005421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 33412005421 its reverse (12450021433), we get a palindrome (45862026854).

The spelling of 33412005421 in words is "thirty-three billion, four hundred twelve million, five thousand, four hundred twenty-one".