33361421 has 8 divisors (see below), whose sum is σ = 34308384. Its totient is φ = 32422320.

The previous prime is 33361417. The next prime is 33361441. The reversal of 33361421 is 12416333.

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 33361421 - 2² = 33361417 is a prime.

It is a super-2 number, since 2×33361421² = 2225968822278482, which 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 (33361441) 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, 7235 + ... + 10911.

It is an arithmetic number, because the mean of its divisors is an integer number (4288548).

Almost surely, 2^33361421 is an apocalyptic number.

It is an amenable number.

33361421 is a deficient number, since it is larger than the sum of its proper divisors (946963).

33361421 is a wasteful number, since it uses less digits than its factorization.

33361421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3931.

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

The square root of 33361421 is about 5775.9346429820. The cubic root of 33361421 is about 321.9201639707.

Adding to 33361421 its reverse (12416333), we get a palindrome (45777754).

The spelling of 33361421 in words is "thirty-three million, three hundred sixty-one thousand, four hundred twenty-one".