312021130220200 has 96 divisors (see below), whose sum is σ = 768238394830200. Its totient is φ = 117449071165440.

The previous prime is 312021130220117. The next prime is 312021130220287. The reversal of 312021130220200 is 2022031120213.

It can be written as a sum of positive squares in 12 ways, for example, as 24891697548964 + 287129432671236 = 4989158^2 + 16944894^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15652216 + ... + 29479384.

Almost surely, 2^{312021130220200} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312021130220200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (384119197415100).

312021130220200 is an abundant number, since it is smaller than the sum of its proper divisors (456217264610000).

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

312021130220200 is a wasteful number, since it uses less digits than its factorization.

312021130220200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13833839 (or 13833830 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 312021130220200 its reverse (2022031120213), we get a palindrome (314043161340413).

The spelling of 312021130220200 in words is "three hundred twelve trillion, twenty-one billion, one hundred thirty million, two hundred twenty thousand, two hundred".