1099398121350 has 24 divisors (see below), whose sum is σ = 2726507341320. Its totient is φ = 293172832320.

The previous prime is 1099398121333. The next prime is 1099398121397. The reversal of 1099398121350 is 531218939901.

It is a junction number, because it is equal to n+sod(n) for n = 1099398121293 and 1099398121302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3664660255 + ... + 3664660554.

It is an arithmetic number, because the mean of its divisors is an integer number (113604472555).

Almost surely, 2^{1099398121350} is an apocalyptic number.

1099398121350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1099398121350 is an abundant number, since it is smaller than the sum of its proper divisors (1627109219970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1099398121350 is a wasteful number, since it uses less digits than its factorization.

1099398121350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7329320824 (or 7329320819 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 51.

The spelling of 1099398121350 in words is "one trillion, ninety-nine billion, three hundred ninety-eight million, one hundred twenty-one thousand, three hundred fifty".