3115240402121 has 4 divisors (see below), whose sum is σ = 3115356578244. Its totient is φ = 3115124226000.

The previous prime is 3115240402117. The next prime is 3115240402133. The reversal of 3115240402121 is 1212040425113.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2981368568896 + 133871833225 = 1726664^2 + 365885^2 .

It is a cyclic number.

It is not a de Polignac number, because 3115240402121 - 2² = 3115240402117 is a prime.

It is a super-3 number, since 3×3115240402121³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3115240402181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58047830 + ... + 58101471.

It is an arithmetic number, because the mean of its divisors is an integer number (778839144561).

Almost surely, 2^{3115240402121} is an apocalyptic number.

It is an amenable number.

3115240402121 is a deficient number, since it is larger than the sum of its proper divisors (116176123).

3115240402121 is a wasteful number, since it uses less digits than its factorization.

3115240402121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116176122.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 3115240402121 its reverse (1212040425113), we get a palindrome (4327280827234).

The spelling of 3115240402121 in words is "three trillion, one hundred fifteen billion, two hundred forty million, four hundred two thousand, one hundred twenty-one".