133121120212 has 24 divisors (see below), whose sum is σ = 246640615200. Its totient is φ = 62692873056.

The previous prime is 133121120203. The next prime is 133121120281. The reversal of 133121120212 is 212021121331.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 133121120212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5049262 + ... + 5075557.

It is an arithmetic number, because the mean of its divisors is an integer number (10276692300).

Almost surely, 2^133121120212 is an apocalyptic number.

It is an amenable number.

133121120212 is a deficient number, since it is larger than the sum of its proper divisors (113519494988).

133121120212 is a wasteful number, since it uses less digits than its factorization.

133121120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10125015 (or 10125013 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 133121120212 its reverse (212021121331), we get a palindrome (345142241543).

The spelling of 133121120212 in words is "one hundred thirty-three billion, one hundred twenty-one million, one hundred twenty thousand, two hundred twelve".