33241340021 has 4 divisors (see below), whose sum is σ = 34313641344. Its totient is φ = 32169038700.

The previous prime is 33241339981. The next prime is 33241340023. The reversal of 33241340021 is 12004314233.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33241340021 is a prime.

It is a super-2 number, since 2×33241340021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33241340023) 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, 536150615 + ... + 536150676.

It is an arithmetic number, because the mean of its divisors is an integer number (8578410336).

Almost surely, 2^33241340021 is an apocalyptic number.

33241340021 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

33241340021 is a deficient number, since it is larger than the sum of its proper divisors (1072301323).

33241340021 is a wasteful number, since it uses less digits than its factorization.

33241340021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072301322.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 33241340021 its reverse (12004314233), we get a palindrome (45245654254).

The spelling of 33241340021 in words is "thirty-three billion, two hundred forty-one million, three hundred forty thousand, twenty-one".