311112222440121 has 24 divisors (see below), whose sum is σ = 464923029285000. Its totient is φ = 200237750668032.

The previous prime is 311112222440111. The next prime is 311112222440171. The reversal of 311112222440121 is 121044222211113.

311112222440121 is a `hidden beast` number, since 3 + 1 + 1 + 1 + 12 + 2 + 224 + 401 + 21 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2879282954025 + 308232939486096 = 1696845^2 + 17556564^2 .

It is not a de Polignac number, because 311112222440121 - 2³⁰ = 311111148698297 is a prime.

It is a super-2 number, since 2×311112222440121² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (311112222440111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51892146 + ... + 57576203.

It is an arithmetic number, because the mean of its divisors is an integer number (19371792886875).

Almost surely, 2^{311112222440121} is an apocalyptic number.

It is an amenable number.

311112222440121 is a deficient number, since it is larger than the sum of its proper divisors (153810806844879).

311112222440121 is a wasteful number, since it uses less digits than its factorization.

311112222440121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109479273 (or 109479270 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

Adding to 311112222440121 its reverse (121044222211113), we get a palindrome (432156444651234).

The spelling of 311112222440121 in words is "three hundred eleven trillion, one hundred twelve billion, two hundred twenty-two million, four hundred forty thousand, one hundred twenty-one".