1211200133 has 8 divisors (see below), whose sum is σ = 1422948576. Its totient is φ = 1016391600.

The previous prime is 1211200121. The next prime is 1211200141. The reversal of 1211200133 is 3310021121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211200133 - 2⁴ = 1211200117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211200153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4234823 + ... + 4235108.

It is an arithmetic number, because the mean of its divisors is an integer number (177868572).

Almost surely, 2^1211200133 is an apocalyptic number.

1211200133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1211200133 is a deficient number, since it is larger than the sum of its proper divisors (211748443).

1211200133 is a wasteful number, since it uses less digits than its factorization.

1211200133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8469955.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1211200133 is about 34802.3006854432. The cubic root of 1211200133 is about 1065.9544245986.

Adding to 1211200133 its reverse (3310021121), we get a palindrome (4521221254).

The spelling of 1211200133 in words is "one billion, two hundred eleven million, two hundred thousand, one hundred thirty-three".