3012421221 has 6 divisors (see below), whose sum is σ = 4351275110. Its totient is φ = 2008280808.

The previous prime is 3012421219. The next prime is 3012421231. The reversal of 3012421221 is 1221242103.

It is a happy number.

3012421221 is a `hidden beast` number, since 301 + 242 + 122 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2639390625 + 373030596 = 51375^2 + 19314^2 .

It is not a de Polignac number, because 3012421221 - 2¹ = 3012421219 is a prime.

It is a super-2 number, since 2×3012421221² = 18149363225462261682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3012421194 and 3012421203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3012421231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 167356726 + ... + 167356743.

Almost surely, 2^3012421221 is an apocalyptic number.

It is an amenable number.

3012421221 is a deficient number, since it is larger than the sum of its proper divisors (1338853889).

3012421221 is a wasteful number, since it uses less digits than its factorization.

3012421221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334713475 (or 334713472 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 3012421221 is about 54885.5283385338. The cubic root of 3012421221 is about 1444.2373295212.

Adding to 3012421221 its reverse (1221242103), we get a palindrome (4233663324).

The spelling of 3012421221 in words is "three billion, twelve million, four hundred twenty-one thousand, two hundred twenty-one".