6111167221 has 4 divisors (see below), whose sum is σ = 6145308000. Its totient is φ = 6077026444.

The previous prime is 6111167207. The next prime is 6111167233. The reversal of 6111167221 is 1227611116.

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 not a de Polignac number, because 6111167221 - 2⁷ = 6111167093 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 6111167221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6111167281) 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, 17070121 + ... + 17070478.

It is an arithmetic number, because the mean of its divisors is an integer number (1536327000).

Almost surely, 2^6111167221 is an apocalyptic number.

It is an amenable number.

6111167221 is a deficient number, since it is larger than the sum of its proper divisors (34140779).

6111167221 is a wasteful number, since it uses less digits than its factorization.

6111167221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34140778.

The product of its digits is 1008, while the sum is 28.

The square root of 6111167221 is about 78173.9548762886. The cubic root of 6111167221 is about 1828.2744462826.

Adding to 6111167221 its reverse (1227611116), we get a palindrome (7338778337).

The spelling of 6111167221 in words is "six billion, one hundred eleven million, one hundred sixty-seven thousand, two hundred twenty-one".