33140255021 has 4 divisors (see below), whose sum is σ = 33559752000. Its totient is φ = 32720758044.

The previous prime is 33140255011. The next prime is 33140255123. The reversal of 33140255021 is 12055204133.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12055204133 = 7 ⋅1722172019.

It is a cyclic number.

It is not a de Polignac number, because 33140255021 - 2¹⁸ = 33139992877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33140255011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209748371 + ... + 209748528.

It is an arithmetic number, because the mean of its divisors is an integer number (8389938000).

Almost surely, 2^33140255021 is an apocalyptic number.

It is an amenable number.

33140255021 is a deficient number, since it is larger than the sum of its proper divisors (419496979).

33140255021 is an equidigital number, since it uses as much as digits as its factorization.

33140255021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419496978.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 33140255021 its reverse (12055204133), we get a palindrome (45195459154).

The spelling of 33140255021 in words is "thirty-three billion, one hundred forty million, two hundred fifty-five thousand, twenty-one".