33220001 has 2 divisors, whose sum is σ = 33220002. Its totient is φ = 33220000.

The previous prime is 33219983. The next prime is 33220013. The reversal of 33220001 is 10002233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31192225 + 2027776 = 5585^2 + 1424^2 .

It is a cyclic number.

It is not a de Polignac number, because 33220001 - 2⁶ = 33219937 is a prime.

It is a super-2 number, since 2×33220001² = 2207136932880002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33220301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16610000 + 16610001.

It is an arithmetic number, because the mean of its divisors is an integer number (16610001).

Almost surely, 2^33220001 is an apocalyptic number.

It is an amenable number.

33220001 is a deficient number, since it is larger than the sum of its proper divisors (1).

33220001 is an equidigital number, since it uses as much as digits as its factorization.

33220001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 33220001 is about 5763.6794671460. The cubic root of 33220001 is about 321.4646435049.

Adding to 33220001 its reverse (10002233), we get a palindrome (43222234).

The spelling of 33220001 in words is "thirty-three million, two hundred twenty thousand, one".