111216479 has 16 divisors (see below), whose sum is σ = 125953920. Its totient is φ = 97275360.

The previous prime is 111216467. The next prime is 111216491. The reversal of 111216479 is 974612111.

111216479 = T₂₄₂ + T₂₄₃ + ... + T₈₇₉.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111216467) and next prime (111216491).

It is a cyclic number.

It is not a de Polignac number, because 111216479 - 2²⁴ = 94439263 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 (111216379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140924 + ... + 141710.

It is an arithmetic number, because the mean of its divisors is an integer number (7872120).

Almost surely, 2^111216479 is an apocalyptic number.

111216479 is a deficient number, since it is larger than the sum of its proper divisors (14737441).

111216479 is a wasteful number, since it uses less digits than its factorization.

111216479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270.

The product of its digits is 3024, while the sum is 32.

The square root of 111216479 is about 10545.9223873495. The cubic root of 111216479 is about 480.9017755496.

The spelling of 111216479 in words is "one hundred eleven million, two hundred sixteen thousand, four hundred seventy-nine".