111621044 has 6 divisors (see below), whose sum is σ = 195336834. Its totient is φ = 55810520.

The previous prime is 111621043. The next prime is 111621053. The reversal of 111621044 is 440126111.

It can be written as a sum of positive squares in only one way, i.e., 84456100 + 27164944 = 9190^2 + 5212^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111621043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13952627 + ... + 13952634.

It is an arithmetic number, because the mean of its divisors is an integer number (32556139).

Almost surely, 2^111621044 is an apocalyptic number.

It is an amenable number.

111621044 is a deficient number, since it is larger than the sum of its proper divisors (83715790).

111621044 is a wasteful number, since it uses less digits than its factorization.

111621044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27905265 (or 27905263 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 111621044 is about 10565.0860857827. The cubic root of 111621044 is about 481.4841850277.

Adding to 111621044 its reverse (440126111), we get a palindrome (551747155).

The spelling of 111621044 in words is "one hundred eleven million, six hundred twenty-one thousand, forty-four".