312020121100 has 18 divisors (see below), whose sum is σ = 677083663004. Its totient is φ = 124808048400.

The previous prime is 312020121089. The next prime is 312020121121. The reversal of 312020121100 is 1121020213.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1560100506 + ... + 1560100705.

Almost surely, 2^312020121100 is an apocalyptic number.

It is an amenable number.

312020121100 is an abundant number, since it is smaller than the sum of its proper divisors (365063541904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312020121100 is a wasteful number, since it uses less digits than its factorization.

312020121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3120201225 (or 3120201218 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 312020121100 its reverse (1121020213), we get a palindrome (313141141313).

The spelling of 312020121100 in words is "three hundred twelve billion, twenty million, one hundred twenty-one thousand, one hundred".