133123123012 has 24 divisors (see below), whose sum is σ = 254218894272. Its totient is φ = 60492712800.

The previous prime is 133123122989. The next prime is 133123123013. The reversal of 133123123012 is 210321321331.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (133123123013) 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, 293064 + ... + 593407.

It is an arithmetic number, because the mean of its divisors is an integer number (10592453928).

Almost surely, 2^133123123012 is an apocalyptic number.

It is an amenable number.

133123123012 is a deficient number, since it is larger than the sum of its proper divisors (121095771260).

133123123012 is a wasteful number, since it uses less digits than its factorization.

133123123012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889899 (or 889897 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 133123123012 its reverse (210321321331), we get a palindrome (343444444343).

The spelling of 133123123012 in words is "one hundred thirty-three billion, one hundred twenty-three million, one hundred twenty-three thousand, twelve".