20334333421 has 8 divisors (see below), whose sum is σ = 20701015200. Its totient is φ = 19968386160.

The previous prime is 20334333413. The next prime is 20334333517. The reversal of 20334333421 is 12433343302.

It is a happy number.

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 20334333421 - 2³ = 20334333413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20334333421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20334333521) 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, 127611 + ... + 238648.

It is an arithmetic number, because the mean of its divisors is an integer number (2587626900).

Almost surely, 2^20334333421 is an apocalyptic number.

It is an amenable number.

20334333421 is a deficient number, since it is larger than the sum of its proper divisors (366681779).

20334333421 is an equidigital number, since it uses as much as digits as its factorization.

20334333421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367259.

The product of its (nonzero) digits is 15552, while the sum is 28.

Adding to 20334333421 its reverse (12433343302), we get a palindrome (32767676723).

The spelling of 20334333421 in words is "twenty billion, three hundred thirty-four million, three hundred thirty-three thousand, four hundred twenty-one".