12533011 has 4 divisors (see below), whose sum is σ = 12562000. Its totient is φ = 12504024.

The previous prime is 12533009. The next prime is 12533023. The reversal of 12533011 is 11033521.

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

It is a cyclic number.

It is not a de Polignac number, because 12533011 - 2¹ = 12533009 is a prime.

It is a super-2 number, since 2×12533011² = 314152729452242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12533041) 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, 13836 + ... + 14713.

It is an arithmetic number, because the mean of its divisors is an integer number (3140500).

Almost surely, 2^12533011 is an apocalyptic number.

12533011 is a deficient number, since it is larger than the sum of its proper divisors (28989).

12533011 is an equidigital number, since it uses as much as digits as its factorization.

12533011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28988.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 12533011 is about 3540.1992881757. The cubic root of 12533011 is about 232.2835600872.

Adding to 12533011 its reverse (11033521), we get a palindrome (23566532).

It can be divided in two parts, 125330 and 11, that multiplied together give a triangular number (1378630 = T₁₆₆₀).

The spelling of 12533011 in words is "twelve million, five hundred thirty-three thousand, eleven".