133512211 has 6 divisors (see below), whose sum is σ = 155310180. Its totient is φ = 114438996.

The previous prime is 133512199. The next prime is 133512233. The reversal of 133512211 is 112215331.

It is not a de Polignac number, because 133512211 - 2²¹ = 131415059 is a prime.

It is a super-2 number, since 2×133512211² = 35651020972217042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133512011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1362321 + ... + 1362418.

It is an arithmetic number, because the mean of its divisors is an integer number (25885030).

Almost surely, 2^133512211 is an apocalyptic number.

133512211 is a deficient number, since it is larger than the sum of its proper divisors (21797969).

133512211 is an equidigital number, since it uses as much as digits as its factorization.

133512211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2724753 (or 2724746 counting only the distinct ones).

The product of its digits is 180, while the sum is 19.

The square root of 133512211 is about 11554.7484178583. The cubic root of 133512211 is about 511.1013122448.

Adding to 133512211 its reverse (112215331), we get a palindrome (245727542).

The spelling of 133512211 in words is "one hundred thirty-three million, five hundred twelve thousand, two hundred eleven".