3121444321111 has 8 divisors (see below), whose sum is σ = 3135744047744. Its totient is φ = 3107173928760.

The previous prime is 3121444321091. The next prime is 3121444321129. The reversal of 3121444321111 is 1111234441213.

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

It is a cyclic number.

It is not a de Polignac number, because 3121444321111 - 2²¹ = 3121442223959 is a prime.

It is a super-2 number, since 2×3121444321111² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3121444321111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121444321181) 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, 7120251 + ... + 7545916.

It is an arithmetic number, because the mean of its divisors is an integer number (391968005968).

Almost surely, 2^{3121444321111} is an apocalyptic number.

3121444321111 is a deficient number, since it is larger than the sum of its proper divisors (14299726633).

3121444321111 is a wasteful number, since it uses less digits than its factorization.

3121444321111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14667141.

The product of its digits is 2304, while the sum is 28.

Adding to 3121444321111 its reverse (1111234441213), we get a palindrome (4232678762324).

The spelling of 3121444321111 in words is "three trillion, one hundred twenty-one billion, four hundred forty-four million, three hundred twenty-one thousand, one hundred eleven".