123212510133 has 16 divisors (see below), whose sum is σ = 166389888000. Its totient is φ = 81088740720.

The previous prime is 123212510077. The next prime is 123212510137. The reversal of 123212510133 is 331015212321.

It is a happy number.

It is not a de Polignac number, because 123212510133 - 2⁸ = 123212509877 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123212510137) 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, 1546918 + ... + 1624616.

It is an arithmetic number, because the mean of its divisors is an integer number (10399368000).

Almost surely, 2^123212510133 is an apocalyptic number.

It is an amenable number.

123212510133 is a deficient number, since it is larger than the sum of its proper divisors (43177377867).

123212510133 is an equidigital number, since it uses as much as digits as its factorization.

123212510133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84472.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 123212510133 its reverse (331015212321), we get a palindrome (454227722454).

The spelling of 123212510133 in words is "one hundred twenty-three billion, two hundred twelve million, five hundred ten thousand, one hundred thirty-three".