1311115222121 has 8 divisors (see below), whose sum is σ = 1314562392000. Its totient is φ = 1307670146640.

The previous prime is 1311115222033. The next prime is 1311115222177. The reversal of 1311115222121 is 1212225111131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311115222121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311115222181) 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, 734030 + ... + 1777928.

It is an arithmetic number, because the mean of its divisors is an integer number (164320299000).

Almost surely, 2^{1311115222121} is an apocalyptic number.

It is an amenable number.

1311115222121 is a deficient number, since it is larger than the sum of its proper divisors (3447169879).

1311115222121 is a wasteful number, since it uses less digits than its factorization.

1311115222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047199.

The product of its digits is 240, while the sum is 23.

The spelling of 1311115222121 in words is "one trillion, three hundred eleven billion, one hundred fifteen million, two hundred twenty-two thousand, one hundred twenty-one".