3012051221 has 4 divisors (see below), whose sum is σ = 3013560000. Its totient is φ = 3010542444.

The previous prime is 3012051199. The next prime is 3012051239. The reversal of 3012051221 is 1221502103.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3012051221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3012051221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3012051281) 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, 751391 + ... + 755388.

It is an arithmetic number, because the mean of its divisors is an integer number (753390000).

Almost surely, 2^3012051221 is an apocalyptic number.

It is an amenable number.

3012051221 is a deficient number, since it is larger than the sum of its proper divisors (1508779).

3012051221 is a wasteful number, since it uses less digits than its factorization.

3012051221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508778.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 3012051221 is about 54882.1575833166. The cubic root of 3012051221 is about 1444.1781977185.

Adding to 3012051221 its reverse (1221502103), we get a palindrome (4233553324).

The spelling of 3012051221 in words is "three billion, twelve million, fifty-one thousand, two hundred twenty-one".