1101121993 has 4 divisors (see below), whose sum is σ = 1101223188. Its totient is φ = 1101020800.

The previous prime is 1101121951. The next prime is 1101122003. The reversal of 1101121993 is 3991211011.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 197037369 + 904084624 = 14037^2 + 30068^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101121993 - 2²⁵ = 1067567561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1101101993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31996 + ... + 56797.

It is an arithmetic number, because the mean of its divisors is an integer number (275305797).

Almost surely, 2^1101121993 is an apocalyptic number.

It is an amenable number.

1101121993 is a deficient number, since it is larger than the sum of its proper divisors (101195).

1101121993 is an equidigital number, since it uses as much as digits as its factorization.

1101121993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101194.

The product of its (nonzero) digits is 486, while the sum is 28.

The square root of 1101121993 is about 33183.1582734374. The cubic root of 1101121993 is about 1032.6309692434.

The spelling of 1101121993 in words is "one billion, one hundred one million, one hundred twenty-one thousand, nine hundred ninety-three".