1121101936789 has 4 divisors (see below), whose sum is σ = 1121104552140. Its totient is φ = 1121099321440.

The previous prime is 1121101936781. The next prime is 1121101936861. The reversal of 1121101936789 is 9876391011211.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 300021298564 + 821080638225 = 547742^2 + 906135^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121101936789 - 2³ = 1121101936781 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121101936781) 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, 497272 + ... + 1577809.

It is an arithmetic number, because the mean of its divisors is an integer number (280276138035).

Almost surely, 2^{1121101936789} is an apocalyptic number.

It is an amenable number.

1121101936789 is a deficient number, since it is larger than the sum of its proper divisors (2615351).

1121101936789 is an equidigital number, since it uses as much as digits as its factorization.

1121101936789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2615350.

The product of its (nonzero) digits is 163296, while the sum is 49.

The spelling of 1121101936789 in words is "one trillion, one hundred twenty-one billion, one hundred one million, nine hundred thirty-six thousand, seven hundred eighty-nine".