1099121407 has 2 divisors, whose sum is σ = 1099121408. Its totient is φ = 1099121406.

The previous prime is 1099121389. The next prime is 1099121411. The reversal of 1099121407 is 7041219901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1099121407 - 2⁷ = 1099121279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1099121467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549560703 + 549560704.

It is an arithmetic number, because the mean of its divisors is an integer number (549560704).

Almost surely, 2^1099121407 is an apocalyptic number.

1099121407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1099121407 is an equidigital number, since it uses as much as digits as its factorization.

1099121407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 1099121407 is about 33152.9999698368. Note that the first 4 decimals coincide. The cubic root of 1099121407 is about 1032.0052076811.

The spelling of 1099121407 in words is "one billion, ninety-nine million, one hundred twenty-one thousand, four hundred seven".