33432121 has 2 divisors, whose sum is σ = 33432122. Its totient is φ = 33432120.

The previous prime is 33432109. The next prime is 33432131. The reversal of 33432121 is 12123433.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22934521 + 10497600 = 4789^2 + 3240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33432121 is a prime.

It is a super-2 number, since 2×33432121² = 2235413429117282, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (33432101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16716060 + 16716061.

It is an arithmetic number, because the mean of its divisors is an integer number (16716061).

Almost surely, 2^33432121 is an apocalyptic number.

It is an amenable number.

33432121 is a deficient number, since it is larger than the sum of its proper divisors (1).

33432121 is an equidigital number, since it uses as much as digits as its factorization.

33432121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 19.

The square root of 33432121 is about 5782.0516255046. The cubic root of 33432121 is about 322.1474094558.

Adding to 33432121 its reverse (12123433), we get a palindrome (45555554).

The spelling of 33432121 in words is "thirty-three million, four hundred thirty-two thousand, one hundred twenty-one".