33243041421 has 48 divisors (see below), whose sum is σ = 53485885440. Its totient is φ = 19799730720.

The previous prime is 33243041401. The next prime is 33243041431. The reversal of 33243041421 is 12414034233.

33243041421 is a `hidden beast` number, since 3 + 3 + 243 + 0 + 414 + 2 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-33243041421 is a prime.

It is a super-2 number, since 2×33243041421² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33243041401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 219720 + ... + 338766.

It is an arithmetic number, because the mean of its divisors is an integer number (1114289280).

Almost surely, 2^33243041421 is an apocalyptic number.

It is an amenable number.

33243041421 is a deficient number, since it is larger than the sum of its proper divisors (20242844019).

33243041421 is a wasteful number, since it uses less digits than its factorization.

33243041421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119166 (or 119163 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 33243041421 its reverse (12414034233), we get a palindrome (45657075654).

The spelling of 33243041421 in words is "thirty-three billion, two hundred forty-three million, forty-one thousand, four hundred twenty-one".