872210111 has 2 divisors, whose sum is σ = 872210112. Its totient is φ = 872210110.

The previous prime is 872210107. The next prime is 872210123. The reversal of 872210111 is 111012278.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 872210111 - 2² = 872210107 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (872210011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436105055 + 436105056.

It is an arithmetic number, because the mean of its divisors is an integer number (436105056).

Almost surely, 2^872210111 is an apocalyptic number.

872210111 is a deficient number, since it is larger than the sum of its proper divisors (1).

872210111 is an equidigital number, since it uses as much as digits as its factorization.

872210111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 23.

The square root of 872210111 is about 29533.2035343273. The cubic root of 872210111 is about 955.4479632274.

Adding to 872210111 its reverse (111012278), we get a palindrome (983222389).

The spelling of 872210111 in words is "eight hundred seventy-two million, two hundred ten thousand, one hundred eleven".