312121000001 has 8 divisors (see below), whose sum is σ = 323754694560. Its totient is φ = 300686172192.

The previous prime is 312120999961. The next prime is 312121000153. The reversal of 312121000001 is 100000121213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312121000001 - 2²⁶ = 312053891137 is a prime.

It is a super-4 number, since 4×312121000001⁴ (a number of 47 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312121000201) 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, 49713491 + ... + 49719768.

It is an arithmetic number, because the mean of its divisors is an integer number (40469336820).

Almost surely, 2^312121000001 is an apocalyptic number.

It is an amenable number.

312121000001 is a deficient number, since it is larger than the sum of its proper divisors (11633694559).

312121000001 is an equidigital number, since it uses as much as digits as its factorization.

312121000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99433375.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 312121000001 its reverse (100000121213), we get a palindrome (412121121214).

The spelling of 312121000001 in words is "three hundred twelve billion, one hundred twenty-one million, one", and thus it is an aban number.