3001111221 has 4 divisors (see below), whose sum is σ = 4001481632. Its totient is φ = 2000740812.

The previous prime is 3001111189. The next prime is 3001111229. The reversal of 3001111221 is 1221111003.

3001111221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 3001111221 - 2⁵ = 3001111189 is a prime.

It is a super-2 number, since 2×3001111221² = 18013337121624221682, 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 = 3001111197 and 3001111206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3001111229) 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, 500185201 + ... + 500185206.

It is an arithmetic number, because the mean of its divisors is an integer number (1000370408).

Almost surely, 2^3001111221 is an apocalyptic number.

It is an amenable number.

3001111221 is a deficient number, since it is larger than the sum of its proper divisors (1000370411).

3001111221 is a wasteful number, since it uses less digits than its factorization.

3001111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000370410.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 3001111221 is about 54782.3988248050. The cubic root of 3001111221 is about 1442.4276214376.

Adding to 3001111221 its reverse (1221111003), we get a palindrome (4222222224).

The spelling of 3001111221 in words is "three billion, one million, one hundred eleven thousand, two hundred twenty-one".