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110990221 = 293827249
BaseRepresentation
bin1101001110110…
…01001110001101
321201211212221221
412213121032031
5211403141341
615002523341
72515254436
oct647311615
9251755857
10110990221
1157718661
1231206551
1319cc0cb4
1410a5248d
159b25ed1
hex69d938d

110990221 has 4 divisors (see below), whose sum is σ = 114817500. Its totient is φ = 107162944.

The previous prime is 110990189. The next prime is 110990233. The reversal of 110990221 is 122099011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122099011 = 891371899.

It can be written as a sum of positive squares in 2 ways, for example, as 38502025 + 72488196 = 6205^2 + 8514^2 .

It is a cyclic number.

It is not a de Polignac number, because 110990221 - 25 = 110990189 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 (110990021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1913596 + ... + 1913653.

It is an arithmetic number, because the mean of its divisors is an integer number (28704375).

Almost surely, 2110990221 is an apocalyptic number.

It is an amenable number.

110990221 is a deficient number, since it is larger than the sum of its proper divisors (3827279).

110990221 is an equidigital number, since it uses as much as digits as its factorization.

110990221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3827278.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 110990221 is about 10535.1896518288. The cubic root of 110990221 is about 480.5754397872.

The spelling of 110990221 in words is "one hundred ten million, nine hundred ninety thousand, two hundred twenty-one".

Divisors: 1 29 3827249 110990221