3121342424221 has 8 divisors (see below), whose sum is σ = 3575970367040. Its totient is φ = 2668894951968.

The previous prime is 3121342424197. The next prime is 3121342424267. The reversal of 3121342424221 is 1224242431213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3121342424221 - 2¹⁷ = 3121342293149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121342424821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545114571 + ... + 545120296.

It is an arithmetic number, because the mean of its divisors is an integer number (446996295880).

Almost surely, 2^{3121342424221} is an apocalyptic number.

It is an amenable number.

3121342424221 is a deficient number, since it is larger than the sum of its proper divisors (454627942819).

3121342424221 is a wasteful number, since it uses less digits than its factorization.

3121342424221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090235283.

The product of its digits is 18432, while the sum is 31.

Adding to 3121342424221 its reverse (1224242431213), we get a palindrome (4345584855434).

The spelling of 3121342424221 in words is "three trillion, one hundred twenty-one billion, three hundred forty-two million, four hundred twenty-four thousand, two hundred twenty-one".