1099121410 has 16 divisors (see below), whose sum is σ = 1984745016. Its totient is φ = 438242688.

The previous prime is 1099121407. The next prime is 1099121411. The reversal of 1099121410 is 141219901.

It is a Cunningham number, because it is equal to 33153²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 395651881 + 703469529 = 19891^2 + 26523^2 .

It is not an unprimeable number, because it can be changed into a prime (1099121411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172449 + ... + 178708.

Almost surely, 2^1099121410 is an apocalyptic number.

1099121410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1099121410 is a deficient number, since it is larger than the sum of its proper divisors (885623606).

1099121410 is a wasteful number, since it uses less digits than its factorization.

1099121410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351477.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 1099121410 is about 33153.0000150816. Note that the first 4 decimals coincide. The cubic root of 1099121410 is about 1032.0052086200.

The spelling of 1099121410 in words is "one billion, ninety-nine million, one hundred twenty-one thousand, four hundred ten".