312000121111 has 8 divisors (see below), whose sum is σ = 372074678784. Its totient is φ = 255801341400.

The previous prime is 312000121093. The next prime is 312000121189. The reversal of 312000121111 is 111121000213.

It is a happy number.

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 312000121111 - 2⁵ = 312000121079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312000121091 and 312000121100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312000122111) 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, 968944315 + ... + 968944636.

It is an arithmetic number, because the mean of its divisors is an integer number (46509334848).

Almost surely, 2^312000121111 is an apocalyptic number.

312000121111 is a deficient number, since it is larger than the sum of its proper divisors (60074557673).

312000121111 is a wasteful number, since it uses less digits than its factorization.

312000121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1937888981.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 312000121111 its reverse (111121000213), we get a palindrome (423121121324).

The spelling of 312000121111 in words is "three hundred twelve billion, one hundred twenty-one thousand, one hundred eleven".