1099120902321 has 32 divisors (see below), whose sum is σ = 1621158271488. Its totient is φ = 657988358400.

The previous prime is 1099120902293. The next prime is 1099120902379. The reversal of 1099120902321 is 1232090219901.

It is not a de Polignac number, because 1099120902321 - 2⁵ = 1099120902289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 1099120902321.

It is not an unprimeable number, because it can be changed into a prime (1099120902391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8741320 + ... + 8866166.

It is an arithmetic number, because the mean of its divisors is an integer number (50661195984).

Almost surely, 2^{1099120902321} is an apocalyptic number.

It is an amenable number.

1099120902321 is a deficient number, since it is larger than the sum of its proper divisors (522037369167).

1099120902321 is a wasteful number, since it uses less digits than its factorization.

1099120902321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131001.

The product of its (nonzero) digits is 17496, while the sum is 39.

The spelling of 1099120902321 in words is "one trillion, ninety-nine billion, one hundred twenty million, nine hundred two thousand, three hundred twenty-one".