33213130421 has 8 divisors (see below), whose sum is σ = 33383427264. Its totient is φ = 33043167520.

The previous prime is 33213130417. The next prime is 33213130439. The reversal of 33213130421 is 12403131233.

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 33213130421 - 2² = 33213130417 is a prime.

It is a super-2 number, since 2×33213130421² (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 (33213130921) 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, 117170 + ... + 283116.

It is an arithmetic number, because the mean of its divisors is an integer number (4172928408).

Almost surely, 2^33213130421 is an apocalyptic number.

It is an amenable number.

33213130421 is a deficient number, since it is larger than the sum of its proper divisors (170296843).

33213130421 is a wasteful number, since it uses less digits than its factorization.

33213130421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166971.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 33213130421 its reverse (12403131233), we get a palindrome (45616261654).

The spelling of 33213130421 in words is "thirty-three billion, two hundred thirteen million, one hundred thirty thousand, four hundred twenty-one".