312142133101220 has 24 divisors (see below), whose sum is σ = 657814728568704. Its totient is φ = 124415662944096.

The previous prime is 312142133101217. The next prime is 312142133101241. The reversal of 312142133101220 is 22101331241213.

It is a super-2 number, since 2×312142133101220² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 312142133101220.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27574387724 + ... + 27574399043.

It is an arithmetic number, because the mean of its divisors is an integer number (27408947023696).

Almost surely, 2^{312142133101220} is an apocalyptic number.

It is an amenable number.

312142133101220 is an abundant number, since it is smaller than the sum of its proper divisors (345672595467484).

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

312142133101220 is a wasteful number, since it uses less digits than its factorization.

312142133101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55148787059 (or 55148787057 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 312142133101220 its reverse (22101331241213), we get a palindrome (334243464342433).

The spelling of 312142133101220 in words is "three hundred twelve trillion, one hundred forty-two billion, one hundred thirty-three million, one hundred one thousand, two hundred twenty".