1111111123099 has 4 divisors (see below), whose sum is σ = 1111140732736. Its totient is φ = 1111081513464.

The previous prime is 1111111123097. The next prime is 1111111123117. The reversal of 1111111123099 is 9903211111111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1111111123099 - 2¹ = 1111111123097 is a prime.

It is a super-2 number, since 2×1111111123099² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1111111123099.

It is not an unprimeable number, because it can be changed into a prime (1111111123097) 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, 14748459 + ... + 14823604.

It is an arithmetic number, because the mean of its divisors is an integer number (277785183184).

Almost surely, 2^{1111111123099} is an apocalyptic number.

1111111123099 is a deficient number, since it is larger than the sum of its proper divisors (29609637).

1111111123099 is an equidigital number, since it uses as much as digits as its factorization.

1111111123099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29609636.

The product of its (nonzero) digits is 486, while the sum is 31.

The spelling of 1111111123099 in words is "one trillion, one hundred eleven billion, one hundred eleven million, one hundred twenty-three thousand, ninety-nine".