33451214021 has 2 divisors, whose sum is σ = 33451214022. Its totient is φ = 33451214020.

The previous prime is 33451213967. The next prime is 33451214033. The reversal of 33451214021 is 12041215433.

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., 20367285796 + 13083928225 = 142714^2 + 114385^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33451214021 is a prime.

It is a super-2 number, since 2×33451214021² (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 (33451216021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16725607010 + 16725607011.

It is an arithmetic number, because the mean of its divisors is an integer number (16725607011).

Almost surely, 2^33451214021 is an apocalyptic number.

It is an amenable number.

33451214021 is a deficient number, since it is larger than the sum of its proper divisors (1).

33451214021 is an equidigital number, since it uses as much as digits as its factorization.

33451214021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 33451214021 its reverse (12041215433), we get a palindrome (45492429454).

The spelling of 33451214021 in words is "thirty-three billion, four hundred fifty-one million, two hundred fourteen thousand, twenty-one".