4221331061 has 4 divisors (see below), whose sum is σ = 4443506400. Its totient is φ = 3999155724.

The previous prime is 4221331019. The next prime is 4221331067. The reversal of 4221331061 is 1601331224.

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-4221331061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221331067) 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, 111087641 + ... + 111087678.

It is an arithmetic number, because the mean of its divisors is an integer number (1110876600).

Almost surely, 2^4221331061 is an apocalyptic number.

It is an amenable number.

4221331061 is a deficient number, since it is larger than the sum of its proper divisors (222175339).

4221331061 is a wasteful number, since it uses less digits than its factorization.

4221331061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222175338.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 4221331061 is about 64971.7712626030. The cubic root of 4221331061 is about 1616.1554749290.

Adding to 4221331061 its reverse (1601331224), we get a palindrome (5822662285).

The spelling of 4221331061 in words is "four billion, two hundred twenty-one million, three hundred thirty-one thousand, sixty-one".