3121234421000 has 256 divisors, whose sum is σ = 7688947368960. Its totient is φ = 1184696217600.

The previous prime is 3121234420963. The next prime is 3121234421009. The reversal of 3121234421000 is 1244321213.

It is not an unprimeable number, because it can be changed into a prime (3121234421009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 276871364 + ... + 276882636.

It is an arithmetic number, because the mean of its divisors is an integer number (30034950660).

Almost surely, 2^{3121234421000} 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 3121234421000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3844473684480).

3121234421000 is an abundant number, since it is smaller than the sum of its proper divisors (4567712947960).

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

3121234421000 is a wasteful number, since it uses less digits than its factorization.

3121234421000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11521 (or 11507 counting only the distinct ones).

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

Adding to 3121234421000 its reverse (1244321213), we get a palindrome (3122478742213).

The spelling of 3121234421000 in words is "three trillion, one hundred twenty-one billion, two hundred thirty-four million, four hundred twenty-one thousand".