3121111151140 has 96 divisors (see below), whose sum is σ = 6695751009024. Its totient is φ = 1221864038400.

The previous prime is 3121111151129. The next prime is 3121111151141. The reversal of 3121111151140 is 411511111213.

It is not an unprimeable number, because it can be changed into a prime (3121111151141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69877815 + ... + 69922465.

It is an arithmetic number, because the mean of its divisors is an integer number (69747406344).

Almost surely, 2^{3121111151140} is an apocalyptic number.

It is an amenable number.

3121111151140 is an abundant number, since it is smaller than the sum of its proper divisors (3574639857884).

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

3121111151140 is a wasteful number, since it uses less digits than its factorization.

3121111151140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45157 (or 45155 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 22.

Adding to 3121111151140 its reverse (411511111213), we get a palindrome (3532622262353).

The spelling of 3121111151140 in words is "three trillion, one hundred twenty-one billion, one hundred eleven million, one hundred fifty-one thousand, one hundred forty".