3012113231221 has 4 divisors (see below), whose sum is σ = 3012242546412. Its totient is φ = 3011983916032.

The previous prime is 3012113231191. The next prime is 3012113231249. The reversal of 3012113231221 is 1221323112103.

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 463345683025 + 2548767548196 = 680695^2 + 1596486^2 .

It is a cyclic number.

It is not a de Polignac number, because 3012113231221 - 2²⁷ = 3011979013493 is a prime.

It is a super-2 number, since 2×3012113231221² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3012113231192 and 3012113231201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3012113231261) 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, 64622650 + ... + 64669243.

It is an arithmetic number, because the mean of its divisors is an integer number (753060636603).

Almost surely, 2^{3012113231221} is an apocalyptic number.

It is an amenable number.

3012113231221 is a deficient number, since it is larger than the sum of its proper divisors (129315191).

3012113231221 is a wasteful number, since it uses less digits than its factorization.

3012113231221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129315190.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 3012113231221 its reverse (1221323112103), we get a palindrome (4233436343324).

The spelling of 3012113231221 in words is "three trillion, twelve billion, one hundred thirteen million, two hundred thirty-one thousand, two hundred twenty-one".