3121021132144 has 20 divisors (see below), whose sum is σ = 6049638865296. Its totient is φ = 1559824005632.

The previous prime is 3121021132091. The next prime is 3121021132249. The reversal of 3121021132144 is 4412311201213.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 42872524 + ... + 42945259.

Almost surely, 2^{3121021132144} is an apocalyptic number.

It is an amenable number.

3121021132144 is a deficient number, since it is larger than the sum of its proper divisors (2928617733152).

3121021132144 is a wasteful number, since it uses less digits than its factorization.

3121021132144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85820064 (or 85820058 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 3121021132144 its reverse (4412311201213), we get a palindrome (7533332333357).

The spelling of 3121021132144 in words is "three trillion, one hundred twenty-one billion, twenty-one million, one hundred thirty-two thousand, one hundred forty-four".