33140224210421 has 2 divisors, whose sum is σ = 33140224210422. Its totient is φ = 33140224210420.

The previous prime is 33140224210417. The next prime is 33140224210501. The reversal of 33140224210421 is 12401242204133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26745849946321 + 6394374264100 = 5171639^2 + 2528710^2 .

It is a cyclic number.

It is not a de Polignac number, because 33140224210421 - 2² = 33140224210417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33140224260421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16570112105210 + 16570112105211.

It is an arithmetic number, because the mean of its divisors is an integer number (16570112105211).

Almost surely, 2^{33140224210421} is an apocalyptic number.

It is an amenable number.

33140224210421 is a deficient number, since it is larger than the sum of its proper divisors (1).

33140224210421 is an equidigital number, since it uses as much as digits as its factorization.

33140224210421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 33140224210421 its reverse (12401242204133), we get a palindrome (45541466414554).

The spelling of 33140224210421 in words is "thirty-three trillion, one hundred forty billion, two hundred twenty-four million, two hundred ten thousand, four hundred twenty-one".