33243140421 has 12 divisors (see below), whose sum is σ = 49796309472. Its totient is φ = 22162093452.

The previous prime is 33243140401. The next prime is 33243140429. The reversal of 33243140421 is 12404134233.

33243140421 is a `hidden beast` number, since 3 + 324 + 314 + 0 + 4 + 21 = 666.

It is not a de Polignac number, because 33243140421 - 2⁵ = 33243140389 is a prime.

It is a super-2 number, since 2×33243140421² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33243140429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68401281 + ... + 68401766.

It is an arithmetic number, because the mean of its divisors is an integer number (4149692456).

Almost surely, 2^33243140421 is an apocalyptic number.

It is an amenable number.

33243140421 is a deficient number, since it is larger than the sum of its proper divisors (16553169051).

33243140421 is an equidigital number, since it uses as much as digits as its factorization.

33243140421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136803062 (or 136803050 counting only the distinct ones).

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

Adding to 33243140421 its reverse (12404134233), we get a palindrome (45647274654).

The spelling of 33243140421 in words is "thirty-three billion, two hundred forty-three million, one hundred forty thousand, four hundred twenty-one".