1213200133 has 4 divisors (see below), whose sum is σ = 1224538560. Its totient is φ = 1201861708.

The previous prime is 1213200083. The next prime is 1213200137. The reversal of 1213200133 is 3310023121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3310023121 = 3673 ⋅901177.

It is a cyclic number.

It is not a de Polignac number, because 1213200133 - 2¹⁷ = 1213069061 is a prime.

It is a super-2 number, since 2×1213200133² = 2943709125422435378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213200137) 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, 5669053 + ... + 5669266.

It is an arithmetic number, because the mean of its divisors is an integer number (306134640).

Almost surely, 2^1213200133 is an apocalyptic number.

It is an amenable number.

1213200133 is a deficient number, since it is larger than the sum of its proper divisors (11338427).

1213200133 is a wasteful number, since it uses less digits than its factorization.

1213200133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11338426.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1213200133 is about 34831.0225660976. The cubic root of 1213200133 is about 1066.5408227296.

Adding to 1213200133 its reverse (3310023121), we get a palindrome (4523223254).

The spelling of 1213200133 in words is "one billion, two hundred thirteen million, two hundred thousand, one hundred thirty-three".