133420211 has 4 divisors (see below), whose sum is σ = 133457472. Its totient is φ = 133382952.

The previous prime is 133420207. The next prime is 133420229. The reversal of 133420211 is 112024331.

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 133420211 - 2² = 133420207 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 133420211.

It is not an unprimeable number, because it can be changed into a prime (133420241) 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, 12611 + ... + 20636.

It is an arithmetic number, because the mean of its divisors is an integer number (33364368).

Almost surely, 2^133420211 is an apocalyptic number.

133420211 is a deficient number, since it is larger than the sum of its proper divisors (37261).

133420211 is an equidigital number, since it uses as much as digits as its factorization.

133420211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37260.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 133420211 is about 11550.7666845106. The cubic root of 133420211 is about 510.9838894639.

Adding to 133420211 its reverse (112024331), we get a palindrome (245444542).

The spelling of 133420211 in words is "one hundred thirty-three million, four hundred twenty thousand, two hundred eleven".