1212201133 has 16 divisors (see below), whose sum is σ = 1507899456. Its totient is φ = 957392640.

The previous prime is 1212201127. The next prime is 1212201163. The reversal of 1212201133 is 3311022121.

It is a cyclic number.

It is not a de Polignac number, because 1212201133 - 2⁵ = 1212201101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212201103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246891 + ... + 251752.

It is an arithmetic number, because the mean of its divisors is an integer number (94243716).

Almost surely, 2^1212201133 is an apocalyptic number.

1212201133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1212201133 is a deficient number, since it is larger than the sum of its proper divisors (295698323).

1212201133 is a wasteful number, since it uses less digits than its factorization.

1212201133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498684.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1212201133 is about 34816.6789484580. The cubic root of 1212201133 is about 1066.2479974876.

Adding to 1212201133 its reverse (3311022121), we get a palindrome (4523223254).

The spelling of 1212201133 in words is "one billion, two hundred twelve million, two hundred one thousand, one hundred thirty-three".