111223690 has 16 divisors (see below), whose sum is σ = 211979592. Its totient is φ = 41872384.

The previous prime is 111223657. The next prime is 111223711. The reversal of 111223690 is 96322111.

It can be written as a sum of positive squares in 4 ways, for example, as 107972881 + 3250809 = 10391^2 + 1803^2 .

It is a super-2 number, since 2×111223690² = 24741418434432200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326959 + ... + 327298.

Almost surely, 2^111223690 is an apocalyptic number.

111223690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111223690 is a deficient number, since it is larger than the sum of its proper divisors (100755902).

111223690 is a wasteful number, since it uses less digits than its factorization.

111223690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654281.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 111223690 is about 10546.2642675025. The cubic root of 111223690 is about 480.9121688169.

The spelling of 111223690 in words is "one hundred eleven million, two hundred twenty-three thousand, six hundred ninety".