1121544531201 has 4 divisors (see below), whose sum is σ = 1495392708272. Its totient is φ = 747696354132.

The previous prime is 1121544531193. The next prime is 1121544531287. The reversal of 1121544531201 is 1021354451211.

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 not a de Polignac number, because 1121544531201 - 2³ = 1121544531193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121544531901) 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, 186924088531 + ... + 186924088536.

It is an arithmetic number, because the mean of its divisors is an integer number (373848177068).

Almost surely, 2^{1121544531201} is an apocalyptic number.

It is an amenable number.

1121544531201 is a deficient number, since it is larger than the sum of its proper divisors (373848177071).

1121544531201 is an equidigital number, since it uses as much as digits as its factorization.

1121544531201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373848177070.

The product of its (nonzero) digits is 4800, while the sum is 30.

Adding to 1121544531201 its reverse (1021354451211), we get a palindrome (2142898982412).

The spelling of 1121544531201 in words is "one trillion, one hundred twenty-one billion, five hundred forty-four million, five hundred thirty-one thousand, two hundred one".