3121021201244 has 24 divisors (see below), whose sum is σ = 5481946960560. Its totient is φ = 1554759287424.

The previous prime is 3121021201237. The next prime is 3121021201247. The reversal of 3121021201244 is 4421021201213.

It is a super-2 number, since 2×3121021201244² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121021201247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364622 + ... + 2524874.

It is an arithmetic number, because the mean of its divisors is an integer number (228414456690).

Almost surely, 2^{3121021201244} is an apocalyptic number.

It is an amenable number.

3121021201244 is a deficient number, since it is larger than the sum of its proper divisors (2360925759316).

3121021201244 is a wasteful number, since it uses less digits than its factorization.

3121021201244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2161589 (or 2161587 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 3121021201244 its reverse (4421021201213), we get a palindrome (7542042402457).

The spelling of 3121021201244 in words is "three trillion, one hundred twenty-one billion, twenty-one million, two hundred one thousand, two hundred forty-four".