1212113133 has 64 divisors (see below), whose sum is σ = 2336256000. Its totient is φ = 602268480.

The previous prime is 1212113131. The next prime is 1212113137. The reversal of 1212113133 is 3313112121.

It is not a de Polignac number, because 1212113133 - 2¹ = 1212113131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212113131) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35143 + ... + 60491.

It is an arithmetic number, because the mean of its divisors is an integer number (36504000).

Almost surely, 2^1212113133 is an apocalyptic number.

It is an amenable number.

1212113133 is a deficient number, since it is larger than the sum of its proper divisors (1124142867).

1212113133 is a wasteful number, since it uses less digits than its factorization.

1212113133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25399 (or 25393 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 1212113133 is about 34815.4151634014. The cubic root of 1212113133 is about 1066.2221953629. Note that the first 3 decimals are identical.

Adding to 1212113133 its reverse (3313112121), we get a palindrome (4525225254).

The spelling of 1212113133 in words is "one billion, two hundred twelve million, one hundred thirteen thousand, one hundred thirty-three".