3012656221 has 4 divisors (see below), whose sum is σ = 3014580352. Its totient is φ = 3010732092.

The previous prime is 3012656209. The next prime is 3012656249. The reversal of 3012656221 is 1226562103.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1226562103 = 13 ⋅94350931.

It is a cyclic number.

It is not a de Polignac number, because 3012656221 - 2⁵ = 3012656189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3012656221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3012656021) 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, 959715 + ... + 962848.

It is an arithmetic number, because the mean of its divisors is an integer number (753645088).

Almost surely, 2^3012656221 is an apocalyptic number.

It is an amenable number.

3012656221 is a deficient number, since it is larger than the sum of its proper divisors (1924131).

3012656221 is a wasteful number, since it uses less digits than its factorization.

3012656221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924130.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 3012656221 is about 54887.6691161139. The cubic root of 3012656221 is about 1444.2748836924.

The spelling of 3012656221 in words is "three billion, twelve million, six hundred fifty-six thousand, two hundred twenty-one".