11550004022201 has 4 divisors (see below), whose sum is σ = 11550605197092. Its totient is φ = 11549402847312.

The previous prime is 11550004022197. The next prime is 11550004022231. The reversal of 11550004022201 is 10222040005511.

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 10786468844176 + 763535178025 = 3284276^2 + 873805^2 .

It is a cyclic number.

It is not a de Polignac number, because 11550004022201 - 2² = 11550004022197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11550004022231) 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, 300558626 + ... + 300597051.

It is an arithmetic number, because the mean of its divisors is an integer number (2887651299273).

Almost surely, 2^{11550004022201} is an apocalyptic number.

It is an amenable number.

11550004022201 is a deficient number, since it is larger than the sum of its proper divisors (601174891).

11550004022201 is an equidigital number, since it uses as much as digits as its factorization.

11550004022201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601174890.

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 11550004022201 its reverse (10222040005511), we get a palindrome (21772044027712).

The spelling of 11550004022201 in words is "eleven trillion, five hundred fifty billion, four million, twenty-two thousand, two hundred one".