312103242221000 has 64 divisors (see below), whose sum is σ = 730330286615280. Its totient is φ = 124839809740800.

The previous prime is 312103242220921. The next prime is 312103242221009. The reversal of 312103242221000 is 122242301213.

It can be written as a sum of positive squares in 8 ways, for example, as 5507554725124 + 306595687495876 = 2346818^2 + 17509874^2 .

It is not an unprimeable number, because it can be changed into a prime (312103242221009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84117032 + ... + 87748968.

Almost surely, 2^{312103242221000} is an apocalyptic number.

It is an amenable number.

312103242221000 is an abundant number, since it is smaller than the sum of its proper divisors (418227044394280).

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

312103242221000 is a wasteful number, since it uses less digits than its factorization.

312103242221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3717891 (or 3717877 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 312103242221000 its reverse (122242301213), we get a palindrome (312225484522213).

The spelling of 312103242221000 in words is "three hundred twelve trillion, one hundred three billion, two hundred forty-two million, two hundred twenty-one thousand".