99072111 has 16 divisors (see below), whose sum is σ = 133844480. Its totient is φ = 65180160.

The previous prime is 99072079. The next prime is 99072121. The reversal of 99072111 is 11127099.

It is not a de Polignac number, because 99072111 - 2⁵ = 99072079 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 (99072121) 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, 79866 + ... + 81096.

It is an arithmetic number, because the mean of its divisors is an integer number (8365280).

Almost surely, 2^99072111 is an apocalyptic number.

99072111 is a deficient number, since it is larger than the sum of its proper divisors (34772369).

99072111 is a wasteful number, since it uses less digits than its factorization.

99072111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566.

The product of its (nonzero) digits is 1134, while the sum is 30.

The square root of 99072111 is about 9953.4974255284. The cubic root of 99072111 is about 462.7187935821.

The spelling of 99072111 in words is "ninety-nine million, seventy-two thousand, one hundred eleven".