11201222554 has 4 divisors (see below), whose sum is σ = 16801833834. Its totient is φ = 5600611276.

The previous prime is 11201222503. The next prime is 11201222573. The reversal of 11201222554 is 45522210211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45522210211 = 79 ⋅576230509.

It can be written as a sum of positive squares in only one way, i.e., 10915443529 + 285779025 = 104477^2 + 16905^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2800305637 + ... + 2800305640.

Almost surely, 2^11201222554 is an apocalyptic number.

11201222554 is a deficient number, since it is larger than the sum of its proper divisors (5600611280).

11201222554 is an equidigital number, since it uses as much as digits as its factorization.

11201222554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5600611279.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 11201222554 its reverse (45522210211), we get a palindrome (56723432765).

The spelling of 11201222554 in words is "eleven billion, two hundred one million, two hundred twenty-two thousand, five hundred fifty-four".