33021421423 has 8 divisors (see below), whose sum is σ = 33410694240. Its totient is φ = 32632554240.

The previous prime is 33021421403. The next prime is 33021421427. The reversal of 33021421423 is 32412412033.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33021421423 - 2²¹ = 33019324271 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 (33021421427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63943 + ... + 264823.

It is an arithmetic number, because the mean of its divisors is an integer number (4176336780).

Almost surely, 2^33021421423 is an apocalyptic number.

33021421423 is a deficient number, since it is larger than the sum of its proper divisors (389272817).

33021421423 is a wasteful number, since it uses less digits than its factorization.

33021421423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202817.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 33021421423 its reverse (32412412033), we get a palindrome (65433833456).

The spelling of 33021421423 in words is "thirty-three billion, twenty-one million, four hundred twenty-one thousand, four hundred twenty-three".