1110121993 has 4 divisors (see below), whose sum is σ = 1128937680. Its totient is φ = 1091306308.

The previous prime is 1110121963. The next prime is 1110122003. The reversal of 1110121993 is 3991210111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1110121993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1110121963) 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, 9407755 + ... + 9407872.

It is an arithmetic number, because the mean of its divisors is an integer number (282234420).

Almost surely, 2^1110121993 is an apocalyptic number.

It is an amenable number.

1110121993 is a deficient number, since it is larger than the sum of its proper divisors (18815687).

1110121993 is an equidigital number, since it uses as much as digits as its factorization.

1110121993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18815686.

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

The square root of 1110121993 is about 33318.4932582492. The cubic root of 1110121993 is about 1035.4367354122.

The spelling of 1110121993 in words is "one billion, one hundred ten million, one hundred twenty-one thousand, nine hundred ninety-three".