3123140241221 has 32 divisors (see below), whose sum is σ = 4203870198528. Its totient is φ = 2240755799040.

The previous prime is 3123140241163. The next prime is 3123140241223. The reversal of 3123140241221 is 1221420413213.

It is a happy number.

3123140241221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-3123140241221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123140241223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3532100 + ... + 4326893.

It is an arithmetic number, because the mean of its divisors is an integer number (131370943704).

Almost surely, 2^{3123140241221} is an apocalyptic number.

It is an amenable number.

3123140241221 is a deficient number, since it is larger than the sum of its proper divisors (1080729957307).

3123140241221 is a wasteful number, since it uses less digits than its factorization.

3123140241221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7859421.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 3123140241221 its reverse (1221420413213), we get a palindrome (4344560654434).

The spelling of 3123140241221 in words is "three trillion, one hundred twenty-three billion, one hundred forty million, two hundred forty-one thousand, two hundred twenty-one".