112721111 has 2 divisors, whose sum is σ = 112721112. Its totient is φ = 112721110.

The previous prime is 112721099. The next prime is 112721117. The reversal of 112721111 is 111127211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 112721111 - 2¹⁰ = 112720087 is a prime.

It is a super-4 number, since 4×112721111⁴ (a number of 33 digits) contains 4444 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 112721111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112721117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56360555 + 56360556.

It is an arithmetic number, because the mean of its divisors is an integer number (56360556).

Almost surely, 2^112721111 is an apocalyptic number.

112721111 is a deficient number, since it is larger than the sum of its proper divisors (1).

112721111 is an equidigital number, since it uses as much as digits as its factorization.

112721111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28, while the sum is 17.

The square root of 112721111 is about 10617.0198737687. The cubic root of 112721111 is about 483.0607524740.

Adding to 112721111 its reverse (111127211), we get a palindrome (223848322).

It can be divided in two parts, 1127211 and 11, that multiplied together give a palindrome (12399321).

The spelling of 112721111 in words is "one hundred twelve million, seven hundred twenty-one thousand, one hundred eleven".