1121656201117 has 4 divisors (see below), whose sum is σ = 1129843472796. Its totient is φ = 1113468929440.

The previous prime is 1121656201031. The next prime is 1121656201121. The reversal of 1121656201117 is 7111026561211.

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 217523363236 + 904132837881 = 466394^2 + 950859^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121656201117 - 2³¹ = 1119508717469 is a prime.

It is a super-2 number, since 2×1121656201117² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121656201217) 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, 4093635634 + ... + 4093635907.

It is an arithmetic number, because the mean of its divisors is an integer number (282460868199).

Almost surely, 2^{1121656201117} is an apocalyptic number.

It is an amenable number.

1121656201117 is a deficient number, since it is larger than the sum of its proper divisors (8187271679).

1121656201117 is an equidigital number, since it uses as much as digits as its factorization.

1121656201117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8187271678.

The product of its (nonzero) digits is 5040, while the sum is 34.

The spelling of 1121656201117 in words is "one trillion, one hundred twenty-one billion, six hundred fifty-six million, two hundred one thousand, one hundred seventeen".