33120001 has 4 divisors (see below), whose sum is σ = 34262100. Its totient is φ = 31977904.

The previous prime is 33119993. The next prime is 33120013. The reversal of 33120001 is 10002133.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25959025 + 7160976 = 5095^2 + 2676^2 .

It is a cyclic number.

It is not a de Polignac number, because 33120001 - 2³ = 33119993 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 33120001.

It is not an unprimeable number, because it can be changed into a prime (33120091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 571006 + ... + 571063.

It is an arithmetic number, because the mean of its divisors is an integer number (8565525).

Almost surely, 2^33120001 is an apocalyptic number.

It is an amenable number.

33120001 is a deficient number, since it is larger than the sum of its proper divisors (1142099).

33120001 is a wasteful number, since it uses less digits than its factorization.

33120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142098.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 33120001 is about 5754.9979148563. The cubic root of 33120001 is about 321.1417579584.

Adding to 33120001 its reverse (10002133), we get a palindrome (43122134).

The spelling of 33120001 in words is "thirty-three million, one hundred twenty thousand, one".