312120200120 has 16 divisors (see below), whose sum is σ = 702270450360. Its totient is φ = 124848080032.

The previous prime is 312120200101. The next prime is 312120200131. The reversal of 312120200120 is 21002021213.

It is a happy number.

It is a super-3 number, since 3×312120200120³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312120200095 and 312120200104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3901502462 + ... + 3901502541.

Almost surely, 2^312120200120 is an apocalyptic number.

It is an amenable number.

312120200120 is an abundant number, since it is smaller than the sum of its proper divisors (390150250240).

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

312120200120 is a wasteful number, since it uses less digits than its factorization.

312120200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7803005014 (or 7803005010 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 312120200120 its reverse (21002021213), we get a palindrome (333122221333).

The spelling of 312120200120 in words is "three hundred twelve billion, one hundred twenty million, two hundred thousand, one hundred twenty".