1201124553505 has 4 divisors (see below), whose sum is σ = 1441349464212. Its totient is φ = 960899642800.

The previous prime is 1201124553467. The next prime is 1201124553521. The reversal of 1201124553505 is 5053554211021.

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 380194326801 + 820930226704 = 616599^2 + 906052^2 .

It is not a de Polignac number, because 1201124553505 - 2¹¹ = 1201124551457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120112455346 + ... + 120112455355.

It is an arithmetic number, because the mean of its divisors is an integer number (360337366053).

Almost surely, 2^{1201124553505} is an apocalyptic number.

It is an amenable number.

1201124553505 is a deficient number, since it is larger than the sum of its proper divisors (240224910707).

1201124553505 is an equidigital number, since it uses as much as digits as its factorization.

1201124553505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240224910706.

The product of its (nonzero) digits is 30000, while the sum is 34.

Adding to 1201124553505 its reverse (5053554211021), we get a palindrome (6254678764526).

The spelling of 1201124553505 in words is "one trillion, two hundred one billion, one hundred twenty-four million, five hundred fifty-three thousand, five hundred five".